---
product_id: 71749746
title: "Aquarium Equip ISTA Co2 Indicator Drop Checker Long Term Monitor Test - Real Time Solution Kits"
brand: "ista"
price: "12.83 DT"
currency: TND
in_stock: false
reviews_count: 8
url: https://www.desertcart.tn/products/71749746-aquarium-equip-ista-co2-indicator-drop-checker-long-term-monitor
store_origin: TN
region: Tunisia
---

# Aquarium Equip ISTA Co2 Indicator Drop Checker Long Term Monitor Test - Real Time Solution Kits

**Brand:** ista
**Price:** 12.83 DT
**Availability:** ❌ Out of Stock

## Quick Answers

- **What is this?** Aquarium Equip ISTA Co2 Indicator Drop Checker Long Term Monitor Test - Real Time Solution Kits by ista
- **How much does it cost?** 12.83 DT with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/71749746-aquarium-equip-ista-co2-indicator-drop-checker-long-term-monitor)

## Best For

- ista enthusiasts

## Why This Product

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

## Description



## Technical Specifications

| Specification | Value |
|---------------|-------|
| Product Dimensions | 34.78 x 14.02 x 8.25 cm; 50 g |
| Item model number | PTM691I506 |
| Item Form | Liquid |
| Quantity | 1 |
| Batteries required | No |
| Batteries Included | No |
| Item Weight | 50 g |

## Product Details

- **Brand:** ISTA
- **Item weight:** 50 Grams
- **Item form:** Liquid
- **Manufacturer:** ISTA

## Images

![Aquarium Equip ISTA Co2 Indicator Drop Checker Long Term Monitor Test - Real Time Solution Kits - Image 1](https://m.media-amazon.com/images/I/51kmFhM3+GL.jpg)

## Questions & Answers

**Q: How many drops should i put in with water?**
A: Put the drops inside the bulb indicator... Never in the water... Usually takes 15 drops that fill a 50% of the indicator... After that,  seal the indicator facing the back lit downside... Avoiding the reactive liquid to touch directly the water...

**Q: Does this stay on with a suction cup or magnet?**
A: Suction cup and it holds well

**Q: I have seen in other Co2 indicators that the mention a "4dkh" solution, i dont know what this means but does this indicator need it or is ready to use**
A: The indicator comes with the solution and is easy to use

**Q: when i got it a few days ago it was blue, then i upped my bps and it went green.  bt it has stayed green even after i shut off the co2 systm?**
A: The change is not immediate. It takes time for the CO2 to diffuse out and get used up. Plus if I'm not mistaken the fluid itself has a delay time, once again having to do with diffusion.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great tool for a planted tank!
*by L***R on 8 January 2020*

Easy to set up & easy to read. Been using this for the best part of 3 years. Great product, I think this little tool helps me achieve a great looking planted tank.

### ⭐⭐⭐⭐⭐ Nice little co2 monitor
*by C***Y on 1 August 2016*

Works great and doesn't take up as much room as some ive used. Plus it doesn't brake like the glass one's do.

### ⭐⭐⭐⭐ Easier to read than other drop checkers.
*by G***L on 7 July 2016*

I wasn't sure about this product at first as it didn't seem to be changing colour at all. I got a different kind of checker, the kind with the bubble on one end and the inverted funnel on the other. I also started using gas and low and behold, the ISTA checker did turn green too ; ) One thing that I do like about this product vs. the all glass kind is that it is EASIER TO READ as it has a white background. I think that if this was £6 or £7 I would have given it five stars but it does seem a bit expensive for a bit of plastic and 10ml of reagent.

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**Shop now:** [https://www.desertcart.tn/products/71749746-aquarium-equip-ista-co2-indicator-drop-checker-long-term-monitor](https://www.desertcart.tn/products/71749746-aquarium-equip-ista-co2-indicator-drop-checker-long-term-monitor)

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-08-16*