OohFeeshy
It's only forever; not long at all...
Yes, but its better not to risk it IMO Plus if they decide to breed, not only will the male get aggressive over the nest, but you will have up to or over 500 fry.
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Why 50 %? Is that cuz there is a problem. I've been told more than 20 - 25 % can cause streess to the fish.black angel said:In the meantime change 50% and add dechlorinator and see if that helps. investing in a gravel vac will help you too.