



Murky water in my second tank (1.5 month old)
I just did some new planting and it's murkier than before, but it was murky before I agitated the bottom of the tank nonetheless. I am guessing it's like that because I tried running a tank without filter at first, and only recently added a small smiple pump mostly for water agitation. I don't want a bigger filter in such a small tank, but is a sponge filter a solution? In the last picture you can see my first tank which is 7 gallon, with a filter that would be too big for this 5 gallon tank. And the water in that tank is always clear despite everything. Should I squeeze out the filter media of my first tank into this second one? Btw the lamp on the new tank is new, just installed it today.