internal filtration alone

So I love internals and run multiples in most of my tanks, it means redundancy should I have failures which I have had with externals in the past, also I run air stones etc in the tanks. anyway I cant help but think that the lack of media ( just have sponge in them at the moment) is a down fall so question is, can I replace the sponges with media in some of the baskets or am I concerned about nothing, or should I add other filtration with media in it??

i know people just use foam filters and I'm using these is my fry tanks, which work in a similar way.

BTW all fish are healthy and water equality is spot on but just a burning feeling lol.

they are nice may upgrade to one.

mine has several baskets, may just replace one or two of the sponges and stick some k1 in there or ceramic media and see how its goes

hahaha like that, i have this in my fry tank



i did build a 3ltr one for my 180 gallon im going to fill with K1 but need a better pump the one i have just doesn't have the power for it. I like the movement of the k1.

i might try swapping some pumps around and see if one of my others has the guts or ill get on and order one on pay day I'm not in a rush but just like the extra lol. where are you buying the K1 from? locally its about £25 for 5 ltrs.

i think the clear bottles actually look quite cool with the k1 moving around. i had major issues in my fry tank but that little ice tea bottle seems to have done the trick so keen to do something with the bigger tanks.