Gazpug
Fish Fanatic

Hello all,
I was wondering how accurate you have to be when putting declorinator in the tank during a 25% water change. Although i am still in the early stages of cycling my tank. I am aware thast you will prbably kill off the bacteria in your media if it is'nt strong enough.
The problem is that i have a 295 L tank and i have took off 5L (290L) because off subsrate and stones and other things that are in the tank cos they will reduce volume. and i mixed intially 5ml of declorinator for evry 45 litres of tap (in accordance with instructions) so for my tank i put in 35ml of declorinator for max capacity. For 25% (72.5L) all i am going to put in is 10ml (rounded up).
Can i do this or does it have to be more accurate? I mabe looking into this a little much but i want to be sure.
Regards
Gaz