i got it, they must be very useful, but the problem is drilling the bottom of your tank if it is all glass, right? I think i�ll stick to my only power head. By the way, my tank has only one 402 Hagen power head for water movement and the return from sump with my lg 4mdqsc. I�m thinking on adding an 802 ph and direct the flow to the live rock, but i�m afraid this would be too much for my fishes, and they become very tired and stressed. Is really another power head necessary?, is more movement always better? The movement on my water is kindda circular if you know what i mean, because the inflow is in the upper right side of my tank and the ph is on the left glass in the middle, so it generates a cycle in the water mov, and by adding the other ph in an opposite direction i would create a different flow inside the tank to change a little that circular movement. Is this a good idea or it sucks? Thanks Marco
-----Original Message----- From: Shane Clays [mailto:[EMAIL PROTECTED]] Sent: Mi�rcoles, 10 de Octubre de 2001 12:19 p.m. To: '[EMAIL PROTECTED]' Subject: RE: Return from sump closed loop is where there is an input and an output drilled into the tank and a pump that is dedicated to that input and output. You plump the input and output of the pump to the tank. That way, you have additional current in the tank, it is very easy to hide, and if the power goes out, it will not flood because the water pressure is equalized. I have a 1 inch bulkheads drilled into the bottom of my tank and they are plumed with 1 inch pipe to a mag 24 (which by the way is too much). It is on a random timer, and turns on and off surging water into the tank. You cant even see them, because they are on the bottom of the tank, and are easily concealed with LR. Shane > -----Original Message----- > From: Marco Delsordo [SMTP:[EMAIL PROTECTED]] > Sent: Wednesday, October 10, 2001 11:14 AM > To: [EMAIL PROTECTED] > Subject: RE: Return from sump > > what is a closed loop???? > > -----Original Message----- > From: Shane Clays [mailto:[EMAIL PROTECTED]] > Sent: Mi�rcoles, 10 de Octubre de 2001 12:08 p.m. > To: '[EMAIL PROTECTED]' > Subject: RE: Return from sump > > > No, I am considering moving my whole PC out into the room where the tank > is > and getting some pics that way. My PC camera is not that great though. Not > only that, but I am not so sure my tank is amazing, or even impressive as > far as that goes! > > Output depends. How big is the tank again??? If it is above a 29 gallon, > I > would split em and put one on each side of the tank. > > Powerheads will work for dead spots, but if you can do a closed loop, that > is the way to go. I have used closed loops on my tank, and I love it. If > you > run one with a timer, you can turn the pump running the loop on and off to > create surges. > > Shane C. > > > -----Original Message----- > > From: Jose Arturo Perez Vera [SMTP:[EMAIL PROTECTED]] > > Sent: Wednesday, October 10, 2001 11:05 AM > > To: '[EMAIL PROTECTED]' > > Subject: RE: Return from sump > > > > Shane: > > > > Did you find a solution about your USB to take some pictures of your > > setup? > > > > I think all the people involved in this list will be pleasure to see how > > amazing your tank is. > > > > By the way, Do you think only one ouput on the surface will be enough? I > > was thinkind on put 1 or 2 Powerheads pointing behind the rock structure > > to skip dead spots behind. > > > > Is this a good Idea? or maybe some closed loops in the tank? > > > > TIA. > > > > :-) > > > > -----Original Message----- > > From: Shane Clays > > To: '[EMAIL PROTECTED]' > > Sent: 10/10/01 11:57 AM > > Subject: RE: Return from sump > > > > You want your outputs at the top of the tank so if the power goes off, > > the > > water does not backflow and overflow the sump. You should be able to > > shut > > the pump off and let the tank drain until the siphon in the output > > breaks > > without overflowing the sump. You can put a small powerhead in the tank > > facing up towards the surface to help agitate it, and an output from > > your > > sump pump aimed across the top of the surface of the tank will help as > > well. > > > > Shane C. > > > > > -----Original Message----- > > > From: Jose Arturo Perez Vera [SMTP:[EMAIL PROTECTED]] > > > Sent: Wednesday, October 10, 2001 10:19 AM > > > To: '[EMAIL PROTECTED] ' > > > Subject: Return from sump > > > > > > Hi ! > > > > > > Can anybody tell me which is the best place to put the water again on > > the > > > tank from the sump? > > > > > > Any good ideas to get good circulation or surface agitation? > > > > > > > > > Thanks ! > > > > > ________________________________________ > > > > LEAVING THE LIST > > ================ > > To stop receiving messages you will need to send a message to > > [EMAIL PROTECTED] with a command to remove you from the > > list. 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