auntiejude
New member
If you change all water, tank has to cycle again so yes you can change to much. If you have the same things in the tank the good bacteria on it will help the cycling process, but i don't recommend it, especially not with animals in it.
If you do it like her you're talking about well then ammonia never builds up so i can see why that works, she never leta the tank cycle. But what a Incredible wasteful
Thing to do! Using so much water. If you have to for some reason for a while, ok. But as a way of taking care of a tank no.
What complete rubbish.
The cycling bacteria live in the filter, on the substrate and on the ornaments, not in the water. 100% water changes are fine.
Changing water isn't wasteful either, many tank-keepers use the nitrate-rich tank water on their garden or houseplants, because it is full of natural fertiliser.