absolutangel04
Daphnia are People Too.
I, personally, cannot tell you exactly when to change the cartridge. There are too many variables. I have heard it suggested to change the cartridge every couple of months. How long has your been running? Yes, it would help if you transplanted a piece of the old one into the new one. Maybe somebody else can shed more light on that for you. LIke I said, I do not change mine very often, I do rinse them out in tank water on a regular basis though to ensure that water is flowing through properly.
Platy fry look like mini adults. they are pretty tiny, so there is a chance that a couple are hanging out in some plants or something, but if you don't see any within a day or 2, it is probably safe to assume they were all eaten. Fish love to eat fry. Even the platy parents will eat the fry. Angels LOVE platy fry. My BST also views fry as a delicacy. But, sometimes i am surprised at how well the little buggers hide!
Platy fry look like mini adults. they are pretty tiny, so there is a chance that a couple are hanging out in some plants or something, but if you don't see any within a day or 2, it is probably safe to assume they were all eaten. Fish love to eat fry. Even the platy parents will eat the fry. Angels LOVE platy fry. My BST also views fry as a delicacy. But, sometimes i am surprised at how well the little buggers hide!