I installed a sump for my 40 gallon tank from eshopps 75 and now my fish don't seem to be doing super well overnight. Any reason this might be? I put the bioballs/media into my sump so that it still has the same processing ability. The hoses are all vinyl and meant for water, says for fish tanks on them. The only piece i'm unsure about is one of the plastic reducers but that was made of polystyrene so I thought it would be fine from the reading I did. Do they just need adjusting to the new flow/noise or is there something more nefarious going on?