Quote:
Originally posted by Pinkster
the waterblock you use will depend on the pump (and pipe?) size you use. a waterblock with a large water channel area will work better with a high powered pump than a waterblock with a narrower channel, and alternatively with smaller pump, a block with a narrower water channel will work better than a block with a wide water channel.
for example a spir@l which has a pretty large water channel will need a big pump for optimum results. i will not speculate on big a pump this needs to be, this could not be determined without tests, although perhaps a little giant pump of some kind would be perfect?
a tc-4 i think (correct me if im wrong) has a slightly narrower water channel than a spir@l, so it should be more suited to a smaller pump, perhaps an eheim 1250 or equivalent.
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I disagree.
First off, I don't believe that the waterblock one uses depends on the pump. I think that it's the other way around.
Second, the pump selection depends on what flow you are trying to achieve, and since the waterblock is by far the biggest restriction, the pump should be selected as a function of that.
We haven't had this debate yet, but the effective flow rates that most people achieve, is somewhere around 100 GPH, regardless of the pump they use. Some people have posted some preliminary results that indicate that an effective flow rate around 200 gph is the best that one can shoot for, for results that are significantly better (300 gph would probably be a waste of money, because the benefit decreases exponentially).
So knowing how much of a restriction the waterblock will cause, will give you an idea of what kind of pump to get.
For the budget conscious, the biggest you can afford is the way to go.