I use the dip strip tests. Everything is fine except the water tests hard. I use Prime water treatment. The tank is a 75 gal. planted tank. It has a lot of Water Sprite various bunch plants thatususally dont do very well. Some smaller plants wit large rounded leaves(sorry i'm not up on scintific names) which do very well and I have acually made 5 cuttings off the origional one.Once in a great while I'll use Seachems Flourish but most of the time I forget about it.The substate is a mixture of Flourite, Volcanit, Flora Base, Some gravel and some sand.. The tank is stocked with Rasbora Hets, Neon and Cardinal Tetras, Cory CatsWhite Clouds- general peaceful small community tank. It hs been established for 4 years. I filter with a Fluval 400 canister that sprays into my homeade bio trickle filter full of lava rock and Bio Stars, ther is also a large Aqua Clear 110 with a sponge on the intake tube. The shrimp were ordred from varius places I found on the internet. I aclimated them by puting 1 cup of water from the tamk into the bucket every 30 to 45 min. They were small and looked very healthy and active.when I finnally put them in of course they all go hide in the plants and caves I have in the tank. In a few days I only see a few oof them. Each day only afew. as weeks go by I see less of them Finally I see none.