fuddmaster
New Member
Hi there i have had my tank almost 2 months. i was reading and it says to change the filter every 2-6 weeks. i have 2 penguin bio-wheel 150 in my 55 gallon i have 6 zebra danios 3 male guppys(gonna get 6 females this weekend) and 3 Platys. i know not to ever change the bio wheel unless it is in pieces. My question is when do i change my filters? there are 2 slots that i can use. should i put the new one in for a few weeks and then take the old one out. How long can i go with the same filters.








