filter?

I believe it said it uses non tank water to flush? Might be wrong?

My original opinion of this filter was that it would be a great " Mechanical water polishing filter " but not such a good " Biological " filter.

As for the production of Hydrogen sulfide gas in your tank due to a deep sand bed, I have had my deep sand bed running for 9 years with no issues or Hydrogen sulfide in my tank.


As for a sump with sand and live rock, in my 25 years of reef keeping as well as working with a larger aquarium maintenance company / retail store I have never seen a serviceable sump (with the exception of vacuuming the very top of the sand and blowing off the rock) . Serviceable meaning the likes of a mechanical filter or chemical filter removing media and replacing it with new media.

My only concern would be the frequency of having to backwash the filter itself. Considering that most micron filter socks essentially do the same thing and have to be swaped out every three days or so, I can only imagine that a pool style sand filter is going to need to be flushed every few days or so to maintain it's filtering capacity. Especially if your bringing in a constant supply of new livestock that possibly die or shed mucus. It just seems like common knowledge and counter productive to trap solid waste in a mechanical filter in a reef evviroment without immediately removing said solids from the water. Any length of time those solids are left traped, exposed to aquarium water they are being broken down and adding disolved waste back to your water. Same principle as how filter socks and bio balls become nitrate traps right? Obviously I could see this type filter working on a fish only setup where worrying about a buildup of disolved organics in the water between filter flushed wouldn't be an issue but a reef with sensitive corals, I'm doubtful. For what it's worth though, why risk hinging your success or failure on a filter that isn't proven to work in the manner you want it to?

Gotareef if you know so much why bother wasting everybody's time posting asking for opinions or posting about something that will get opinions. Yes this is an open forum and that is what an open forum is for but you know it all and when people start commenting you start getting defensive and ridiculing them.
Go back on the net and read up on plenums, I have a plenum set up I bought back in the late eighties when they were the latest greatest thing, again another topic you know nothing about. Have you run a plenum? no ? so the best thing you can do is re sight what you read off the web. As for my deep sand bed not working again your lack of knowledge, if my sand bed was not working it would be black and I would not have Terebellids, Nassarius snails, and all the good things that come with a deep sand bed. And as for questioning my time in the hobby, yeah ok.

I agree, if you can't respect each others opinions and experience, then it's best to keep it between yourselves or to yourselves. Beyond that it's an interesting discussion at least so let's try to keep the personal attacks out of it and keep on the topic of the pros and cons of the filter itself.

I know when we flushed ours... it was a pretty good amount of water.... now what if you could somehow return the waste water back into the system and just dump it through some huge ass filter socks..??

Then why not use something like this..

www.ebay.com/itm/Pentair-CC50-Above-Ground-Swimming-Pool-Cartridge-Filter-/331290085858?pt=LH_DefaultDomain_0&hash=item4d226d89e2