Originally Posted by Bayu
I just made this loop, got 5c less temp on cpu, but i plan to add water cooling on my gtx 690 and chipset. I dont think 1 pomp will do the trick cuz its too weak for such long setup, but i will try.
1 pump will work just fine. I've been running 1 MCP655 pump for 16-24 hours straight for 9 months with 2 360 rads and a CPU/GPU (just added a 2nd GPU).
Now, having said that, I will say that I am now considering changing my loop a little, since I've had a spare MCP655 pump just sitting on my shelf, and I'm thinking about getting an EK-D5 Dual Top, which will allow both of my pumps to be mounts in a single loop (they also make an EK-D5 Dual Loop Top if you want to mount 2 pumps and have 2 separate loops).
Having said that, I am a bit confused as to what you want to do with your loop. Are you planning on having an "open loop" and have the water from the small radiator pump out and into the fish tank, and then just submerge a radiator in the fish tank and draw water in from the fish tank and pump it in to the PC to cool things? I personally would NOT recommend that, because you will have issues with biological contaminates entering your radiators and water blocks.
Is it a "closed loop" system and you are just planning to submerge the larger radiator in the fish tank in the hopes of using the fish tank to help cool the radiator? If so, I'm not sure that is going to work all that well. It might, I've just never heard of such a thing.
I have drawn up designs to do something that is "off the wall", where I have an "open loop" system with it's own pump to cool a "closed loop" system which will cool the computer. But that uses a "heat exchanger", not a radiator, to keep the two systems seperate, and each side has its own pump. Koolance HXP-193 Plate Heat Exchanger
Lastly, I hope that in either case, you don't plan on putting actual live fish in that tank. I have a 55 gallon (208L) aquarium with about 30 fish in it, and given the temps that I experience with my water cooling system (about 41C or 105F water temp after about an hour of 100% load from folding), it would kill all the fish in a tank. A fresh water tank temp, for most fish, is between 70F to 78F (21.1C to 25.5C) with some species (Betas for example) able to go upwards of 85F (29.4C). Salt water temps are usually in the 75F to 80F range (23.9C to 26.7C). So dumping that water into the tank, either from an "open loop" system, or placing a radiator in the tank and generating a hot spot, would NOT be a good thing for 99.99% of the fish that are typically used in aquariums.Edited by 47 Knucklehead - 9/3/12 at 4:33am