Quote:
Originally Posted by dimwit13

i plan on having them both full.
question-how is the dual res different than just 1 big res?
if they are full it shouldnt mater?
not questioning your input-just asking.
-dimwit-
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the problem is the flow between the two res's. because the amount of water in a resivior can vary (and that is why we use them) they inhibit flow.
every other part in your loop can only hold a specific amount of water, so when the pump pushes new water into them the old gets pushed out. but since res's water level can vary (and you will rarely be able to get them 100% full) they do not force the flow to continue. they will just let the water level rise and there will be very low flow out of the res.
this will then cause the water level of the res the pump pulls out of to drop and the pressure difference will put lots of extra stress on your pump and could burn it out.
the point in a res is to make it so you do not have to have 100% of the air bled out of the system for it to work. you will be causing yourself lots of headaches trying to get all the air out of those and if you do not get all the air out you will have the problems i stated before.
the only way you will be able to make both res's work without any extra stress on the pump will be if you use a Y splitter to split the line going into the res's and have one line go into each res and another Y to rejoin the flow coming out of the res's.
I can post a pic if you want.