I'd like to generate some discussion on filtration. It seems to me that all the biofiltration product designs are centered on degrading the organic material that your filter filters out. You change the physical filtration media periodically, but the rest of your filter's "catch" is supposed to be decomposed by the biological filtration part. And I'm doing that to the max with my filters. But I cannot help thinking I'm creating a cesspool in my filters by asking them to biodegrade so much that could be filtered and removed more easily than changing an expensive pad inside the filter.
Also, I've never heard any good, easy answers to the scum that always builds up on the top of the tank. I've read and participated in several threads on this and nobody seems to have the answer.
So I have a couple philosophical, but also very real questions:
1. Why not use a skimmer designed for a SW
tank to skim the crud off the surface of our FW
tanks? Is there some reason other than cost? I've seen fast flowing creeks with lots of foam and I would think it could work in a FW
tank in a very similar way to a SW
2. Why not design a filter that flows through a pre-filter that is easy to change instead of dumping all the particulate matter right into your canister filter, or power filter, or whatever it is? I've tried putting media bags as pre-filters over the intakes of my filters, but it seems crazy to have to reach your hand in and put a glass over the pre-filter to remove it without the junk falling back into the tank, etc. Why isn't there an easy design sold where the water is lifted and allowed to fall through an easily removable pre-filter before it goes into the main filter's media? You could remove and replace the prefilter in seconds and get rid of most of the particulate waste in your tank without loading down the main filter. This would remove an extreme amount of load that filters usually carry and would let you go far longer between filter cleanings.