![]() I'm going to build a second overflow just in case cause the more I think about it the more I think I'd rather have more flow than I need than to be riding the edge of what my system can handle. However, I kinda like the idea of a partial siphon that isn't maxing out the overflow just in case something does go wrong! I'm probably just paranoid though. I could probably push more gph than I am now with something smaller than a mag 7 pump but larger than the maxijet 1200. I think the gph has less to do with the 90* elbow joints and more to do with full vs. I suspect this is like all things and YMMV! Here is the article I got my info from and it has proven extremely true for my particular situation and the gph I'm getting from my overflow. I know neither of mine have lost their start up siphon and I stop/start my return pump fairly often (did it a whole lot at first when I was testing the system, do it now just during routine stuff). I've read a lot of horror stories with the overflow boxes, but have yet to read anything really bad about a correctly build DIY overflow. The nice thing about the DIY overflow is that it is pretty darn reliable. In talking with some other folks (who have been at this hobby far longer than me) who have built the DIY overflows my experience seems par for the course. My system is very simple, is working well and with the exception of the gph is doing exactly what I wanted/hoped it would do. I painted the overflow in the display tank black, like my background and it blends in very well. Obviously predrilled is better, but this seems to be a good work around if your tank isn't drilled. Better to have two anyway in case one clogs. It's working, but I want more flow!! I think I'm going to just build a second overflow and call it good. So, I'm using my dinky little maxi jet1200. I had wanted to use a mag 7 return pump, but no way! It over runs my overflow in no time. I later read some more info that stated a 300gph flow max for 1" pipe, and that's exactly right. The 1" simply does not flow as fast as some of the online charts I originally found said it would. The only thing I would change is to use a larger diameter pipe for the overflow out of my main tank. The fuge sits up higher than the sump so the gravity fed siphon will work.īoth work great and I've stop/started them many times now and have never had the siphone break. No teeth u just lower the front panel a.little. It might be a little thin and flimsy or cheap. My sump and fuge are separate (fuge is a 10g tank I had on hand, sump is a 20g I also had). I guess you could prob just go get the plastic at a.hardware.store and do it. I made a second out of 3/4" PVC to overflow from my fuge to my sump. I made one out of 1" PVC to overflow from my display tank down to my sump & fuge (t's under the tank to provide water to both). I had also added a 2 centimetres hard foam behind the external tank to level the internal tank.Īdded 2 more hoses to a total of 4 hoses to increase the speed of siphoning so that there won't be any slow down of over flow.I'm using 2 DIY overflows on my tank. So here is the modification to put a more porous filter medium instead and make a larger hole at the back of the internal tank. Īfter the first video on the DIY overflow box, I discovered that the filter medium that I had placed in the internal tank had blocked the water from flowing in causing a gradual slow down of over flow which is pretty dangerous!! I learn from another youtube video how to make it. I know it's a lot to take in but that's how I did it. But I drilled too large a hole so I used some aquarium friendly silicon glue to seal up both sides of the connector.īottom are a small section of hose and connect back to plastic pipes that I link down to the DIY filter sump system below the aquarium. - Hose connector that connect two end of 1/2 inch garden hose (normally found in big supermarket)įor the connector, I make a large hole big enough to put the connector at the bottom and screw it back.- Soldering iron or electric drill to make holes for water to enter and tying the cable tie of both tanks.- 01 x big specimen fish tank (just make sure larger then the smaller tank).- 01 x small fish fry external breeding plastic tank (which i hang inside).This project takes some effort and materials to make. ![]() Now with the overflow box idea, you can reset the siphon like within a minute of sucking the air using the air tube from the middle of the hose. Previously I had tried using pipes to make complicated siphoning system which have hard to reset when bubbles find it's way into the pipes. Remove it and use the filter bag on the two big hose instead! ![]() WARNING: do not put the filter medium in the internal tank, realised the filter medium choked the over flow over time! This idea of overflow is not new, it's how you siphon water from higher level to lower level using a hose. ![]()
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