I am going to eventuallly buy some ocean clear canister filters and i would like to Know what would be the most efficient way to set them up so that i can get the most filtration out of them.
They will go on a indoor pond that will hold somewhere between 800-1500 gallons and be stock with 16-20 12"-40" (inch) fish.
They are inline filters and are probably rated for a certain amount of flow. So you need a line leaving the tank with water, have it go through the filter(s) then have the pump (rated for about what the filters are for, no more!) then have a line go back into the tank.
you could try doing a search in the under tank mechinacal set up thread for that type of filter.
Actually the pump does need to go before the filters. Placing the pump after the filters will cause a decrease in pressure at the pump intake as the filter becomes clogged. This decrease in pressure can lead to cavitation, decreasing efficiency and increasing pump wear.
The photos show how I have my NuClear (similar to the Ocean Clear) filters set up in series. The first canister holds a 100 micron pleated poly screen cartridge. The second one holds a 25 micron pleated fiber cartridge.
A good combo would be the OC bead filter followed by pleated micron cartridge.
If you want to use more than one of the same type of filter you can plumb them in parallel using one large pump, or you could run them with individually plumbed pumps.
If you do go with a pressurized canister like the Ocean Clear or NuClear, be sure to get an adequate pump. In addition to the correct GPH, you need to be sure that the pump has at least 20' of head pressure.
If you can, set it up with multiple ball valves and a bypass so that you can backwash. I usually change/clean the cartridge every two months, but if I had installed the bypass I'd imagine you could probably go a year if you're diligent enough with your backwashes. Instead of the OC's, I'd recommend the Nu-Clear canisters, I have both and the Nu-Clear is much easier to maintain. Overall these filters are great, no matter which one you choose, the amount of gunk they filter out is ridiculous, plus you can put purigen/carbon in the middle for added filtration.
These are terrific filters, but for the size of your project 800 to 1500 gallon, probably you will need something else to complement your filtration.
For 800 gallon you may get away with four, the beauty about this canister its that you can hook them together two or more.
For the pump i will use something like a blue line 50hd or 70hd in that range, with the 70hd i would hook 3 canister in line one mech and two bio.
Because of the stock you are planing to have use 100 microm in one of them fallow by a bio, and a 25 microm on the other, for fine polishing fallow by a bio canister, this way won't clog so often the microm; so two pumps, 4 or 5 canisters.
I like the maintenance on these filter easy and quick if you set them right will ball valves and have a spare microm, i prefer Nu-clear over Ocean, basically same filter but its easy to open the lid on the Nu-clear plus they come with 1" ports instead of 3/4" on the ocean clear.
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