How to make home-made calcium blocks for tortoises

Tortoises need calcium in order to build strong bones, a strong shell, and healthy organs. Ideally, they are fed a widely varied diet of nutritious weeds and dark leafy greens that have high levels of bio-available calcium in them. Adding a sprinkling of a healthy plant-based supplement such as TNT can help significantly. However, sometimes a tortoise's calcium requirements go beyond what is found in the plants we can provide. 

Some tortoise keepers rely on sprinkling calcium powder on tortoise food. However, this has the danger of causing a dosage beyond what a tortoise needs, and may actually cause health problems. For this reason, I like to provide healthy tortoises with calcium sources that they can help themselves to, as needed. Tortoises seem to have a good instinct about when their body needs more calcium.

Some tortoises readily eat cuttlefish bone on their own.

Cuttlefish bone (found in the bird aisle of most pet stores, or available in bulk online) is a good option. However, not all tortoises seem to care for cuttlebone. Quarry chalk is a good source of calcium. It is widely available in the UK and some other countries, but is hard to come by here in the US. Finally, man-made calcium blocks are another good source of calcium. Some such products are available in the pet trade. However, I have found them to be ridiculously expensive, and they often have undesirable ingredients such as sugar or artificial dyes and flavors. For this reason, I did a little research, and decided to try making my own calcium blocks.  

The home-made calcium blocks are tortoise-approved!

After seeing how ridiculously easy it is to make the home-made calcium blocks, I wanted to share the recipe and procedure with you, so that you and your tortoise(s) may benefit from it as well. 

First, you need to decide on the calcium source. Food-grade calcium carbonate (CaCO3) is one good option, sometimes called Limestone flour (available e.g on Amazon). Another, more affordable and more easily available source is so called Agricultural Lime (CaCO3) - I got it at our local feed store for $8 for a 50lb bag! Agricultural lime is produced by pulverizing limestone or chalk, and is commonly used as a soil amendment. Please make sure to read the label CAREFULLY: you want to make sure that it not so-called hydrated lime, that it does not contain Magnesium Carbonate, and that it does not have any other ingredients and impurities in significant amounts. Here is the kind I bought:

One of many good options

The only other ingredient you will need to make lime blocks is water.
For tools, you will need:

• a large mixing bowl 
• a sturdy spoon to mix with 
• and some kind of mold that will withstand 200 degrees F (93 degrees C). I used a silicone muffin pan that I got at Goodwill for $2 
• an oven, pre-heated to 200 degrees F (93 degrees C)

It took a little bit of mixing and adding to find just the right consistency. Here is the ratio of ingredients that I found to work best:

• 1.5 cups of warm water (H2O)
• 7 cups of CaCO3 powder (Ok, sue me; I used a liquid measuring cup to measure the dry powder, which I know is a no-no in cooking... but in this case it worked fine, since I was just aiming for keeping track of the ratio that worked)
  
  NOTE: Today I made the calcium blocks again, and this time it took 4.75 cups of CaCO3 and nearly 1.5 cups of water. You may have to experiment just a tiny bit - the mixture should be mixable with a bit of muscle, but not all crumbly. It definitely should not be wet or soggy.

Calcium Carbonate powder

First, I measured the Calcium Carbonate Powder into the mixing bowl. Then I made an indentation into the powder, and slowly poured the warm water into it. Then I very carefully stirred the mixture, to minimize clouds of powder flying up and all around. The mixture quickly gets very thick, so you really do need a sturdy spoon made of metal or wood. A spatula didn't cut it.

Yum! Calcium paste!

Keep on mixing until there is no more liquid on top, and no more pockets of powder at the bottom. It will get progressively tougher to mix, and will start looking like mortar or thick plaster of Paris.

Next, spoon the Calcium Carbonate + water mixture into the molds you have chosen. The amount I made was exactly the right amount to fill all 12 wells of the muffin pan, plus 1 small cup.

NOTE: Please DO NOT dump excess slurry down your drain. It can clog your drain and/or wreck your in-sink disposal. I took the bowl outside and hosed it down. It is perfectly safe just to dump it onto your garden or your lawn. 
In fact, if you don't have a lot of tortoises, and don't want to have the remnants of a 50lb bag (minus 7 cups) of agricultural lime sitting in your garage... just spread the rest into your lawn, or dig it into your flower beds or raised garden beds!

Soon-to-be Calcium blocks

Next, carefully place the mold into the oven. I used a cookie sheet under the silicone muffin pan since it is a bit wobbly. Set the timer to 1 hour.

Bake the calcium cakes

After 1 hour of baking, open the oven door and carefully pull the oven rack out far enough that you can safely touch the calcium cakes. You will notice that water has risen to the top of them. Use a paper towel or napkin to wick off the excess liquid. This will significantly cut down on the drying time.
Bake for another 2-3 hours, depending on your oven. I checked every hour to remove more liquid, and after a total of 4 hours, they looked completely dry, and had shrunken in the molds.

Carefully remove the mold(s) from the oven, and place somewhere to cool down. This took a long time. I used our handy dandy infrared thermometer to check the temperature of the calcium blocks, and waited for them to almost be cool enough to touch.
Once they are cool enough, carefully remove each calcium block from the mold, and place it on a cookie drying rack. They should come out easily. I let them sit like that overnight, just to make sure all the moisture had dried out.

12 beautiful calcium cupcakes.

The next day, I put one of these beautiful calcium cupcakes into each of the tortoise enclosures, and packed the extra ones into ziploc bags for later use. Within minutes of placing the cakes into the enclosures, the tortoises congregated around them, and took a few nibbles. Pretty soon, they were sporting cute little calcium mustaches... 

Jill approves.

The part that really made my day: Amber, my XXL female Russian tortoise had just laid eggs. She has been stubbornly refusing to eat cuttlefish bone, and does not eat weeds if I have sprinkled them with calcium. However, by evening, her calcium cake looked like this:

Amber loves her calcium cupcake!

I hope you have fun making your own calcium blocks, and that your tortoises enjoy them as much as mine do! Please keep in mind that in order to properly absorb calcium, a tortoise needs UVB to produce vitamin D3. You can read a little more about this HERE.

Ps: When you mist your enclosures, please avoid spraying the calcium cakes too thoroughly (you might take them out briefly), because otherwise they may disintegrate.

Pps: You might experiment with mixing in ground up weeds, or a little bit of carrot juice for a nice orange color... however, my tortoises (even the ones who NEVER eat cuttlefish bone!) heavily approved and helped themselves to these calcium cupcakes within minutes of placing them into each enclosure.

Ppps: I am not the inventor of home-made calcium blocks. There are several conversation threads on the Tortoise Forum (e.g. HERE and HERE) that mention them long before I ever thought of making them. They don't however, mention the exact ratio of water and CaCO3 (Calcium Carbonate) that works best. 

How to find a good Veterinarian for your Tortoise (and maybe an excellent one!)

Finding a good veterinarian who is experienced and up-to-date on caring for tortoises (not just turtles) can be very difficult. Since tortoises live for a century or longer, there is a good chance that your tortoise will need to go to the vet at some point, whether for a beak trim, an injury or for an illness, or to be treated for parasites.

Mila, getting a check-up from Dr. Kelly Flaminio

In an ideal world, a tortoise keeper already has a relationship with a reliable and knowledgeable reptile vet before the tortoise has even been purchased or adopted. A check-up and a fecal exam (to check for parasites) should be done within the first two weeks of owning the tortoise. This is especially the case if you bought your tortoise from a pet store. If parasites or other problems are discovered by the vet within the initial 14 days, most larger chain stores will actually refund you the cost for the office visit and the parasite treatment.

We love our reptile vet, Dr. Kelly Flaminio!

Whether you are being proactive, or you already find yourself in over your head with a sick or injured tortoise, it is important to ask a few questions of the vet before trusting him or her with your tortoise's health.

First, how should you go about finding an exotics vet?
A good starting place is a list of vets that has been compiled by tortoise keepers on the tortoise forum HERE. This list is sorted by State, as well as by country. If you live close to a State border, you may want to check for clinics on the other side of the State line.
(Please keep in mind that not all of the vets on this list are guaranteed to be awesome.... they are however at the very least more likely to know how to provide healthcare for a tortoise!)

The TFO list of reptile vets in the USA and in the rest of the world.

Google can be of help, too. Entering "exotics veterinarian" in a map search near you should provide you with several options (Note: If your Google search brings forth a list of places advertising "girls girls girls" you might need to narrow your key words down a little more!). Follow the links to the vet clinics' websites, and see what they say about themselves. Often, Google listings already have ratings associated with the listing. Read the ratings carefully, keeping in mind that there are probably many happy clients who just didn't get around to writing a review.

Google map search for "exotics vet" or "exotics veterinarian"

When you have found a reptile vet who looks promising, give them a call, and politely ask them a few questions:

1. Does this vet clinic have experience with tortoises, specifically? (you can even ask if they have experience with your specific tortoise species, e.g. Russian tortoises)
2. Is this exotics vet familiar with the different care and dietary requirements of a tortoise in comparison to a turtle?
3. How long has this vet been practicing? (sometimes a newer vet will actually have more up-to-date knowledge about tortoises!) 
4. How long has this vet been providing healthcare for tortoises?
5. How many tortoises does this clinic treat each month? 
6. How often does the veterinarian treat reptiles in comparison to dogs and cats?
7. How often does the exotics vet attend continued education events and conferences pertaining to reptiles and tortoise care?
8. Is this vet able to trim your tortoises beak, if necessary? 
9. Does this vet perform surgery on tortoises, should this ever become necessary?
10. Is this vet available in the case of after-hour emergencies? (Not all are - in that case, please also ask for the contact information of an emergency vet who will see a tortoise. It is good to have this information on hand, should it ever become necessary.)
11. Is this vet able to keep a tortoise overnight should treatment require an extended stay?

If you have a VERY large tortoise, such as a full-grown sulcata or even an aldabra tortoise, you may want to also ask if this vet does house visits. In some cases, transporting a vet is easier than transporting a tortoise... 

A few questions should be asked that pertain to the financial aspect of a vet visit:

1. Is the first exam free? (can't hurt to ask - often it is!)
2. How much is the exam fee? (within a town, this can vary greatly from one office to another!)
3. Does this clinic do fecal exams for parasites in-house or externally?
4. Are they willing to run a fecal exam without requiring an office visit? Then if parasites are found, and treatment is necessary, you can still bring your tortoise in for the office visit and to get treatment.
5. Does the veterinarian give a price quote before performing a surgery or another procedure? Will different options be given? Does this vet clinic offer payment options if a high vet fee is incurred?

Armed with the above questions, you should be able to determine whether a vet will be able to help you and your tortoise.

Although currently in perfect health, this tiny baby tortoise
will likely need vet care at some point in her life.

We are lucky to have a wonderful and experienced reptile vet within easy driving distance of our home. Our veterinarian, Dr. Kelly Flaminio at the East Mill Plain VCA, is very knowledgeable, and we have had a very good experience with her care for several of the reptiles we own or foster. 

Because our reptiles have gotten such great care, I thought it might be useful to you to see a few of Dr. Kelly's answers to some of my questions:

Q: "How many reptiles does your veterinary clinic see on average?"
A: "Between 50-100 per month. Usually about 3 per day."

Q: "How long have you been treating tortoises?"
A: "I have been treating tortoises and other reptiles for about 5 years."

Q: "How often do you attend conferences and continued education events?"
A: "Twice a year."

Q: "What are the most frequent reptile cases you see?"
A: "We most frequently see new lizards parents bought for kids. Next, the most frequent cases are amputations and abscesses of various reptiles. Many reptile keepers don't bring their animal in until something bad happens, unfortunately."

Q: "What do you most frequently see tortoise patients for?"
A: "New tortoise pets often come in to be checked and treated for parasites and to have blood work done to ensure they are healthy. Long-term, tortoises most frequently come in for a beak trim. Some tortoises we see suffer from MDB (metabolic bone disease) from improper husbandry. In the Spring we usually see quite a few tortoises with URIs (upper respiratory infections) or pneumonia. Sometimes tortoises that have been found on the loose are relinquished to the clinic, and then we find foster homes for them."

Many of the above questions had already been answered in previous interactions: Dr. Kelly has extensive experience with tortoises, and definitely knows the difference between a box turtle and a tortoise. She is able to perform surgery on tortoises and other reptiles in-house. The clinic is able to keep reptiles overnight if necessary.

During my interview with her, Dr. Kelly also mentioned that local new patients to her clinic are welcome to print off the 'free first exam' coupon from their website. They will honor the coupon for reptiles as well as for dogs and cats.

Whether you have a very large tortoise, or a very small tortoise,
...it's a good idea to know a good reptile vet!

The above questions don't always guarantee that a vet is awesome. Sometimes, it will take several office visits to find a vet that will meet the needs of you and your tortoise. Many veterinarians are VERY GOOD veterinarians, but just haven't specialized on tortoises. Others might be operating off of out-of-date information.

There are a few RED FLAGS that indicate that a reptile vet is NOT a good tortoise vet:

1. You are told to feed your tortoise 'more animal protein.' (this is based on a confusion over tortoises vs. box turtles)
2. You are told to add cat food into your tortoise's diet (this is based on 35-year-old, outdated information that results in terribly deformed tortoises)
3. The vet suggests treatment for parasites with medication other than Safeguard or Panacur (active ingredient fenbendazole). (other worm medications, such as ivermectin, can kill a tortoise!)
4. You are told not to provide water in the enclosure (this is based on outdated, false information)
5. You are told to use sand for substrate
6. The vet claims to be able to tell you how old your tortoise is based on the 'rings' in his shell (tortoises are not trees. The rings are based on seasons of plentiful food and lack of food... which can happen several times throughout a year. The only way to know a tortoise's age is to know it's hatch date or at least hatch year).

Mila frowns on the idea of having her rings counted to tell her age.

CAUTION:
If you live out in the country, it may be necessary to drive several hours to get to a good reptile vet. If the weather is very hot or very cold, be sure to accommodate your tortoise accordingly. A bin with some paper towels or cloth towels works well for a transport container. Never leave your tortoise in the car - you don't want it to die of freezing or heat stroke.
If it is necessary to cross State lines to get to a good reptile vet, please be sure to know the laws pertaining to bringing reptiles across. The last thing you want is for your tortoise to be confiscated, or for you to have to pay a fine.

The pictures have been posted with permission from Dr. Kelly. I have not received any payment or other incentives to write this blog post. It was purely written to help other tortoise keepers find an excellent reptile vet.