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These work very well, but there is a snag. They do not always stick to the aquarium sides well. It is a minor issue, given the benefit, but nothing is more frustrating than having to "fish" around in the tank to get these and get water up to your armpits in a deep aquarium. Still, if you locate them and reposition during a water change, it is not as big a deal. The algae will latch onto these if you do not clean them now and then, and that is a hassle. Keep the nutrient load down in your tank and that won't be a problem though. They work within a few minutes of mounting, and that is nice.
Verified purchase: Yes | Condition: New
The concept behind these is great and indeed the ammonia indicator works well but I had serious problems with the pH Alerts. The first one 'froze' on me three days after placing in my main tank. Initially, it indicated the proper pH color as being 7.5, which I verified with my pH test kits. But suddenly, on the third day of use, it's color turned yellowish...to a color not at all on it's 'color wheel'. My tank's pH remained consistent at 7.5, however. I removed it and verified it was frozen on this color by subjecting the pH Alert to mildly acidic and basic solutions, to which it did not react at all. After writing to Seachem about this issue, I was sent two replacements with the thought being that mine was defective. However, both replacements failed in the same manner as the original within two days. Given that the pH Alerts work for so many others, this must have something to do with my tank's chemistry, and the good folks at Seachem and I are still trying to figure this out. It is nothing obvious. Bottom line: if the pH Alerts work for you, this is a fantastic product. I gave it 3 stars based on my experience and the fact that the Ammonia alert works, but I'd give it five otherwise.Read full review
Verified purchase: Yes | Condition: New
it looks like a good product but all the writing is in a different language, can't understand the directions
Verified purchase: Yes | Condition: New
Too many different kind of products out there and a lot of them are not that necessary. Just PH and Amonia level control and I don't loose any fish from moving from one aquarium to another.
Verified purchase: Yes | Condition: New
So far when i tested with API test kit the levels are matching. So it is good to be alerted if something changes unexpectedly.
Verified purchase: Yes | Condition: New
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