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I'm copying my text from the original post on another forum since I'm not allowed to post the link. The original post was from 5/30/20. Enjoy! I'm going to take a crack at building my own sump for my 125 mostly South American 125 gallon aquarium. I have been using the one in the photo for 3 years now and it's okay but it was originally designed for saltwater and I'm hoping I can do better. The planned dimensions are 48" x 15" x 15", approximately 46 gallons. I'm building it out of 1/4" polycarbonate and sealing it with the Weldon 16. I am basing it on the attached photo I found online. I'm looking for constructive criticism and help only. It's planned for the water from the tank to pour into the socks on the left, flow into 2 or 3 Cer-Media bio filter blocks, then spill over and down thru the vertical section but with 3 levels instead of 2. Cotton batting at the top, volcanic rock, and/or bio-balls. I was thinking of adding another vertical section of 3 levels with more filtration and purigen as the top level. Next it will flow over into the heater section and finally the return pump on the far right. One of my thoughts is, if I add another vertical section that would flow up then to the heaters, should the water flow under the divider to the pump or still go over spill into the pump section? **I removed the logos from the sump diagram as it's just used as a reference. ** Skip to 7/20/20 for the next installment. Well, it took 6 weeks for me to get the correct polycarbonate. I had to reorder since I ordered the incorrect width. Anyway, it took about 13 hours from start to finish. We started with three sheets for 32" x 48" x 1/4" clear polycarbonate. We cut it with a table saw and hand sanded all the edges with multiple grits of fine sandpaper. I'm going to give it 24 hours to set up then it will sit with water in it for a week to check for leaks. I'll also be putting a pump in it to see how it will flow. From 7/21/20 - I let the Weldon 4 and 16 cure for 24 hours then added water. I've got a few leaks but nothing too bad. I dried it out and will seal it again after the joints have a chance to dry out. Then on 7/27/20 - After fixing the leaks, I let it sit in my garage for the entire week with an 800 gph pump circulating water for a week. Friday night I finally installed it. The entire process took about 4 hours. I also replaced all the tubing. Here is a photo of it up and running. I am currently using two 200 micron socks but I think they're too fine. They clog up quickly and restrict water flow. I may switch to 300 micron and see how that does.- 4 replies
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