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

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.

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.

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.

Item arrived on time and although the packaging of the product was damaged the goods was not. The instructions are a bit vauge on how much indicator too use, but you only have a small chamber so not to hard to guess. I was always wondering if I was putting in too much CO2 in my tank, in the end I was not putting in enough. Now I have the correct amount and my plants are better than before and all have new shoots, would definitely recommen

Very quick delivery. Great little item. Easy to set up and use.

Not clear if it works or not.

Came home to find fish gasping at surface and swimming as if they where drunk, drop checker nice and green. Checked ammonia, nitrite and nitrate, all good.Turned of co², carried out 25% water change and changed filter outlet to agitate water surface.1 hour later fish back to normal, I got lucky.

Really useful tool to monitor co2 levels. Works well too as I also monitor co2 levels from ph and kh.