---
product_id: 267193452
title: "Laboratories SZMMD11 Dr. Turtle Slow-Release Calcium Block, Net WT .5 oz"
brand: "zoo med"
price: "4403 kr"
currency: ISK
in_stock: true
reviews_count: 5
category: "Zoo Med"
url: https://www.desertcart.is/products/267193452-laboratories-szmmd11-dr-turtle-slow-release-calcium-block-net-wt
store_origin: IS
region: Iceland
---

# Laboratories SZMMD11 Dr. Turtle Slow-Release Calcium Block, Net WT .5 oz

**Brand:** zoo med
**Price:** 4403 kr
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** Laboratories SZMMD11 Dr. Turtle Slow-Release Calcium Block, Net WT .5 oz by zoo med
- **How much does it cost?** 4403 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/267193452-laboratories-szmmd11-dr-turtle-slow-release-calcium-block-net-wt)

## Best For

- zoo med enthusiasts

## Why This Product

- Trusted zoo med brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

Dr. Turtle is a slow-release calcium block that conditions water while providing a calcium supplement to promote healthy shell growth for aquatic turtles. To use, simply place the Dr. Turtle Block in

Review: Parfait merci !
Review: I can’t say enough good about doctor turtle. Honestly, it was one of those things I bought on a whim, & I was cleaning my 40 gal tank once every 3-5 days, like a full clean, constantly. I was worn down and really upset that no matter what I did or tried nothing worked to keep it even somewhat clear/healthy. In addition to what I normally do, this really seems to clear up the water and keep it healthy, it’s literally a blessing to me. It’s been 8 day’s and the water is still clear, so I’m all about that. Also using it with another brand calcium block and reptoguard so maybe they work well together. Whatever it is, I’ll never go back to what I was doing before and my turts seem much happier to not be moved to their holding tank a few times a week, less stress for them and much less stress and worry for me as well; we’re all happy as clams :) if you have a tank that won’t stay clean no matter what you try, give this a shot, in conjunction with a good filter, filter media, conditioner, reptoguard, and whatever else you add to your tank, I’m also currently using Paraguard and that seems to also work wonders, I was seeing these tiny worms in my filter and I haven’t seen them since I’ve been using the Paraguard so I’m a happy camper, fingers crossed they never stop making these products, just in case I’ll stock up, suggest any turtle lover does the same :)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0061TC8C2 |
| Best Sellers Rank | #39,189 in Pet Supplies ( See Top 100 in Pet Supplies ) #46 in Reptile & Amphibian Health Supplies |
| Brand | Zoo Med |
| Country of Origin | USA |
| Item Dimensions LxWxH | 1 x 1 x 1 Millimeters |
| Item Form | Solid |
| Item Weight | 9.07 g |
| Item model number | 26223 |
| Liquid Volume | 15 Gallons |
| Manufacturer | TopDawg Pet Supply |
| Product Dimensions | 0.05 x 0.05 x 0.05 cm; 9.07 g |
| UPC | 097612800128 |

## Product Details

- **Brand:** Zoo Med
- **Item Form:** Solid
- **Item Weight:** 9 g
- **Liquid Volume:** 15 Gallons
- **Manufacturer:** TopDawg Pet Supply

## Images

![Laboratories SZMMD11 Dr. Turtle Slow-Release Calcium Block, Net WT .5 oz - Image 1](https://m.media-amazon.com/images/I/91tkgVDtD6L.jpg)

## Questions & Answers

**Q: I have 3 RES turtles, they keep eating this thing in few days. Is that okay?**
A: Yes, it is OK.  My turtles (red ears, maps, and cooters) do that too.  Many years ago, I had 2 map turtles, both of which lived for 26 years, that ate calcium blocks when offered.  The turtles I have now totally consume these blocks in 3 days, and the turtles are growing very fast and have very hard shells.  Apparently, it is instinctive for turtles to consume rich calcium sources  such as this.

**Q: Can I use in fish tank to raise ph?**
A: I do mine

**Q: Can this be used in place of a water conditioning liquid? Does it make water safe for fish as well or do I need a separate water conditioner for fish?**
A: No, It does not take the place of water conditioning liquid. It does not remove chlorine or chloramines. These blocks simply adjust pH and water hardness.

**Q: You you have to have a certain amount of water in the tank to use the Dr. Turtle block?**
A: No but if you're doing a bare bottom tank the block will leave a calcium spot on the glass that I never could seem to completely get off

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by C***E on 27 November 2025*

Parfait merci !

### ⭐⭐⭐⭐⭐ Review
*by M***N on 6 December 2018*

I can’t say enough good about doctor turtle. Honestly, it was one of those things I bought on a whim, & I was cleaning my 40 gal tank once every 3-5 days, like a full clean, constantly. I was worn down and really upset that no matter what I did or tried nothing worked to keep it even somewhat clear/healthy. In addition to what I normally do, this really seems to clear up the water and keep it healthy, it’s literally a blessing to me. It’s been 8 day’s and the water is still clear, so I’m all about that. Also using it with another brand calcium block and reptoguard so maybe they work well together. Whatever it is, I’ll never go back to what I was doing before and my turts seem much happier to not be moved to their holding tank a few times a week, less stress for them and much less stress and worry for me as well; we’re all happy as clams :) if you have a tank that won’t stay clean no matter what you try, give this a shot, in conjunction with a good filter, filter media, conditioner, reptoguard, and whatever else you add to your tank, I’m also currently using Paraguard and that seems to also work wonders, I was seeing these tiny worms in my filter and I haven’t seen them since I’ve been using the Paraguard so I’m a happy camper, fingers crossed they never stop making these products, just in case I’ll stock up, suggest any turtle lover does the same :)

### ⭐⭐⭐⭐⭐ Review
*by C***A on 27 January 2025*

I know many use the Dr Turtle Slow-Release Calcium Block for other pets, but I just want to note that it's perfect for my Mystery Snail. The water parameters stay at a perfect hardness to keep his shell a beautiful golden color and without pivots, cracks, or marks.

## Frequently Bought Together

- Zoo Med MD-11E Dr Turtle Calcium Block
- King British Turtle and Terrapin Multivitamin 20ml
- King British – Turtle & Terrapin Water Freshener 100ml – For Cleaner & Clearer Water – Removes Harmful Ammonia & Nitrite – Ideal for Setting up a New Aquarium or Partial Water Changes

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*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-02-27*