Hello. I recently got my aquarium up and running. I don't know alot about them, but I love it. I have it heavily planted with live plants. It is a 29 gal long tank with a wisper top filter and I have a undergravel filter as well with a penguin 170gph powerhead. I have a wisper air pump with air stone for airation. I put the water in the tank about 3 weeks ago and used the aqua safe to take out the minerals. After a week of having the water in it I added 5 fish and a few days later i added about 5 more. I had 5 mini crabs in there also. 2 of the fish died within a day of putting them in (also there were from petsmart, learned my lesson there). within the last 24hrs 4 of the mini crabs have died. 3 of them had missing limbs. I purchased a api master water test kit. I tested the water last night. the ammonia was at 8.0. I changed out about 7 gallons from the middle of the water, not of the bottom as to not disturb possible biological bacteria. this morning I tested again and here are the results. Could someone tell me if they are normal for the amount of time my tank has been established? If I need to do anything?
nitrite 5.0
nitrate 5.0
ammonia 4.0
ph 7.6
high range ph 8.0
nitrite 5.0
nitrate 5.0
ammonia 4.0
ph 7.6
high range ph 8.0