suction

my filter and heater finally arrived in the mail. There are however, a few problems. The heater, a hydor 25 watt, wont stick to the tank. The suction cups that came with it only stick for a few hours at a time at most, then fall off. I bought some replacements, but the clips were too big to fit...

My boyfriend just finished getting his new Betta Prince into his aquarium. Prince seems to love it but the filter is too strong. It is a Top Fin Filter 10, which is what came with his 'kit'. He found sources to baffle the flow, but hasn't found anything for the in-take. You can tell the fish is...