Is that in your attic?
NuClear canisters with 100 micron followed by 25 micron cartridges.
Dang Dan, you are big on efficiency. You see a lot of heat loss in your crawlspace? I would think the filters would be really minor compared to the tank itself.




View attachment 855698View attachment 855699
NuClear canisters with 100 micron followed by 25 micron cartridges.
Magnum 350 with the micron cartridge is one of the best available for the price
Sorry need to finish. Anyway here is the filter which is hidden behind the 3d background. You can still do this system with a spa canister under the tank like a hayward or starite type filter. Most would be better off price wise with a FX5 but still the applications for a closed loop type system like this works great for polishing or biological. I run mine 24/7 and can change the filter out in a matter of seconds.
![]()
Here is a picture of the tank with the filter set up behind the backgroundI am also running a aquatop CF400 canister filter as well.
165 gallon bowfront with 35 red rainbow tropheus.
![]()
I am pretty big on efficiency, it is kind of an obsession. This system totals about 500 gallons and I only use 800W of heat. One tank (135G) is in the garage and is insulated on two sides plus the hood. The garage gets pretty cold, and so does the crawlspace (although less so), because I live in a pretty cold area with a lot of snow in the winter. The other tank (210G) is in the living room where it never gets very cold. I also do an auto water change and use a DIY heat exchanger to heat the incoming well-water with the outgoing tank water.
A couple more pics of my crawl-space:
Sorry for the derail....