Alright, i added TSS to my new 30 gallon tank after reading all about it hear and did what was said. Tank size:30 gallon Filter: 30 gallon hang on the back type. Filter 2: sponge filter. Testing Kit API Alright now with that out of the way... I set my tank up April 1st. put in tap water 24 hours later i added Tetra aqua-start (or something like that). April 3rd i added the whole bottle of TSS as it said to. April 3rd (20 Min later) Added 5 guppy fry(1 month old). April 8th Tested water Readings: Ammonia - .25? (.25 and .50 are practically the same color its hard to tell) Nitrite - 0 Nitrate - 5-10ish I read that its normal to have ammonia up to 1.0 using TSS and it wouldnt do any long team damage but iv read other places anything over .25 will instantly kill your fish. Question: Is Tetra SafeStart Working? Fish seem to be happy as can be.