I have an API beginner 6-pack test thing, and I still use that and prefer it for ammonia (never got a reading) nitrite (used it maybe once?) and nitrate (use it now and then if I'm curious, will use it for future nitrate testing). It does ask for 10 minutes for nitrate test to color up.
I bought another nitrate standalone test kit from API. They're cheap, and considered reliable by the community for nitrate.
For almost everything else, I do salifert. The exception is phosphate, but honestly all of the phosphate test kits are a crapshoot. Unless it's the Hanna phosphorous checker, I wouldn't even bother unless you have a BIG problem. You can't test low range phosphate with any kit, it's basically YOU HAVE WAAAAY TOO MUCH PHOSPHATE, or nothing. Hanna for anything in between.
I bought another nitrate standalone test kit from API. They're cheap, and considered reliable by the community for nitrate.
For almost everything else, I do salifert. The exception is phosphate, but honestly all of the phosphate test kits are a crapshoot. Unless it's the Hanna phosphorous checker, I wouldn't even bother unless you have a BIG problem. You can't test low range phosphate with any kit, it's basically YOU HAVE WAAAAY TOO MUCH PHOSPHATE, or nothing. Hanna for anything in between.







