New tank ... Thoughts on sump
Ok so I had a tank and now upgraded in size, previous tank didn't have a sump - so I'm still learning about the sump!!
I was advised to put bio balls in the sump and since reading on here I think maybe best to
remove them ???
Possible to replace with pellet skimmer??
The tank seems to b running well, nitrate levels have been on the high side but a reduction in feeding water change appears to b helping.
Attached a couple photos if current set up, would appreciate your thoughts on ways to improve .