Closed loop system

[rayjay]

I must not have read enough posts as I seem to read a lot of posts regarding "closed loop systems" but I have yet to read one that explains to me just what it is. Curiosity is getting the better of me so I just though I would ask. Thanks.

[golfish]

rayjay,
Do a search here and you should find what your looking for. Have you ever used a canister filter? just think of a closed loop as you would a canister filter except you would hook the hose's to a pump instead of the canister. Water is drawn right from the tank through the pump back to the tank........

Mark

[rayjay]

Thanks! Sure seems like a lot of work and expense just to replace power heads that can be hidden for the most part.

[golfish]

it may cost a bit more but lets see you try to get 2000 gph out of hidden powerheads.

[rayjay]

Well,I don't think I have need of 2000g/hr as I have an 1800g/hr return pump pumping though 1" dia poly hose for my sump return so little friction loss. I have 3 buried Hagen 802's, only one of which you can see a little of the top if looking down from above. I believe they are rated 400g/hr each. I also have a Hagen Pro 4 rated at 425g/hr which is exposed by choice but I can hide it if I wish. This is for a Hagen 90g tank housing soft corals and LPS corals.
Do you think I need more for a tank this size?
Thanks again for answering.

[golfish]

Sounds like you have enough flow for anything you wish to keep. If you don't mind digging out the pumps to clean every so often then I wouls stick with what you have. You mentioned that the closed loop sounded like a lot of work. Its just the opposite, a closed loop is very easy to setup and needs a lot less care then a bunch powerheads. Its a matter of preference.

[FISHme]

Rayjay, my closed loop is running my chller and a sea swirl. I also have 4 mj 1200's hidden behind the rocks and a mag 950 running from sump to another sea swirl.
My chiller is on the back patio which makes having a closed loop a must.