Help ! I just lost about 40 Fry in two days!

[Nico G]

I do 20% every week or 30% every 10 days at the latest on both tanks. I run 2 marine land c 530 canister filter on the 125 gal and have 2 800 gph power heads for 2 Bumble Bee 2 red zebra 3 electric blue one Auratus 2 demasani 3 yellow lab 2 blue dolphin and a pleco on the 75 i run an aqua clear 110 and 1 power head both tanks are semi planted with some java moss amazon swords anacharis andf some cryptocoryn
thank you all very much going to pet shop and bringing them water sample

 

[Frank Castle]

I do 20% every week or 30% every 10 days at the latest on both tanks. I run 2 marine land c 530 canister filter on the 125 gal and have 2 800 gph power heads for 2 Bumble Bee 2 red zebra 3 electric blue one Auratus 2 demasani 3 yellow lab 2 blue dolphin and a pleco on the 75 i run an aqua clear 110 and 1 power head both tanks are semi planted with some java moss amazon swords anacharis andf some cryptocoryn
thank you all very much going to pet shop and bringing them water sample

just buy a test kit ....if you're not doing at LEAST 50% water changes weekly (preferably 70-80%), you're gonna have to keep a much tighter watch on parameters.

Most people here will agree that 20-30% is not nearly enough unless it's every 2-3 days. Start doing 70-80% every 5-7 days and you will notice a HUGE difference