aldive Posted May 26, 2004 Share Posted May 26, 2004 I have read posts about how to modify a CPR Aquafuge to prevent it from dumping into the main tank if a pump is lost or a power out situation. It was something about drilling a hole. I am confused about where to drill this hole. Any input and pics will be appreciated. Link to comment
jojomichael Posted May 26, 2004 Share Posted May 26, 2004 Yeah, I would like to know that too. Where do you drill the small hole? Inlet tube/Outlet? Tank Side/Fuge Side? 90 degrees/45? Link to comment
onthefly Posted May 28, 2004 Share Posted May 28, 2004 Drill a tiny hole in the inlet tube.....at 12 o'clock (thats straight up)....just before it turns down. That minimizes the back flow! Link to comment
jojomichael Posted May 28, 2004 Share Posted May 28, 2004 which tube, tank side or fuge side? Link to comment
onthefly Posted May 28, 2004 Share Posted May 28, 2004 On the fuge side......doing it on the tank side won't break the siphon in the fuge, which were trying to do. Link to comment
aldive Posted May 28, 2004 Author Share Posted May 28, 2004 Do I understand correctly that the drilled hole will be underwater during normal operation? Link to comment
onthefly Posted May 28, 2004 Share Posted May 28, 2004 Yes....it will be about 1/2" below the water surface in the fuge. the amount of flow that is lost out that hole is really small...almost insignificant Link to comment
tonkadawg Posted June 2, 2004 Share Posted June 2, 2004 ok, not to be too dense, but can someone please post a pic with this hole drilled? I know onthefly has described it, but it still doesn't make sense in my mind. I want to be completely sure before I unleash my Dewalt on my fuge!X) Link to comment
birdman204 Posted June 2, 2004 Share Posted June 2, 2004 Originally posted by onthefly On the fuge side......doing it on the tank side won't break the siphon in the fuge, which were trying to do. actually, it probablu would if the power went out, but your pump wouldn't get the proper amount of water to the fuge, and depending on how and where you drilled it, water chould be shooting everywhere I drilled mine, with the fuge empty, on the side of the intake pipe inside the fuge, at the elbow, so the flow thru the hole goes towards the fuge return Link to comment
revance Posted June 2, 2004 Share Posted June 2, 2004 Here ya go... you put the hole just beneath the water level in the fuge. If the pump stops and water continues to siphon out of the fuge, the water level will drop. Eventually the water level will get below the hole, the hole will let air in and break the siphon. The same thing works with sumps, you put the hold on the return pipe, just beneath the water level... thus reducing the amount of water that will siphon back into your sump. I have attached a diagram Link to comment
tonkadawg Posted June 2, 2004 Share Posted June 2, 2004 not seeing the diagram you mentioned. Link to comment
birdman204 Posted June 2, 2004 Share Posted June 2, 2004 the piece that the pump pumps water into the fuge, at the elbow INSIDE the fuge, drill a hole with yuor drill, You will need to put the drill "IN" the fuge, to drill it, so it needs to be empty, be sure to test your hole size afterwards to make sure siphon does break. I made mine a little larger than needed because it gets covered by algae and coralline. Link to comment
reefguy01 Posted June 3, 2004 Share Posted June 3, 2004 i think it would be a better idea if you take the long tube out that feeds to the tank and just a do a gravity feed back to the tank. THat's what i'm doing and my pods and stuff are all doing fine. Better than drilling in my opinion. Don't have to worry about siphoning or flooding the house if something gets clogged. Link to comment
tonkadawg Posted June 3, 2004 Share Posted June 3, 2004 thanks to everyone for both the explanation and picture!!! That is what I had pictured in my mind, and I will feel a lot better tonight when I break out the drill. Link to comment
birdman204 Posted June 3, 2004 Share Posted June 3, 2004 Originally posted by reefguy01 i think it would be a better idea if you take the long tube out that feeds to the tank and just a do a gravity feed back to the tank. THat's what i'm doing and my pods and stuff are all doing fine. Better than drilling in my opinion. Don't have to worry about siphoning or flooding the house if something gets clogged. This tube is on the intake side, The siphon will occur from here. The other chamber houses a minute amuont of water, that shouldn't flood anyones tank. That hole looks a shade small.... I would go a little bigger as coralline and algae will begin to cover it. I'd swear you snuck into my house 8 months ago and took a picture of my fuge / heater when It was first setup Looks tha same. Link to comment
Recommended Posts
Archived
This topic is now archived and is closed to further replies.