ArnoldosAquariums
Active Member
- Joined
- Oct 29, 2019
- Messages
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My Eheim pump was finally dying… The biggest sign was the decreased water level.
 I bought a COR15 for a 75g display. It’s so quiet!!!
However….
The only difference in the install is that I added a manifold for my water chiller and reactor, thereby getting rid of the 2nd pump. They are both in line to each other to a half inch tube.
The water line is the same as the “bad” Eheim.
I am in the middle of the set up process and it says to slowly adjust the flow until I get the desired water level. It’s all the way up!
I don’t want to restrict the flow to the chiller for obvious reasons…
It’s an older Deep Blue. The return is 3/4” (and changing that to 1” isn’t an option) and the drain is 1”.
Because it’s an older tank there is no second emergency drain.
**update: Weir brought up, RFG removed (it was an older style), inlet checked and chiller outlet set to 50%.
It barely went up ¼”.
I went from pump to check valve to to 2’ tube . Filled 5 gallons in 30 seconds in 32 seconds.
That’s barely 600GPH. Either the check valve is bad or the pump is. Which is crap because this is the replacement pump. (First one came in used. Coral Bargain Warehouse wasted no time and made things right and got me a replacement pump. Buying local rocks!!)
Update 2: valve opens with zero resistance. 

 I bought a COR15 for a 75g display. It’s so quiet!!!
However….
The only difference in the install is that I added a manifold for my water chiller and reactor, thereby getting rid of the 2nd pump. They are both in line to each other to a half inch tube.
The water line is the same as the “bad” Eheim.
I am in the middle of the set up process and it says to slowly adjust the flow until I get the desired water level. It’s all the way up!
I don’t want to restrict the flow to the chiller for obvious reasons…
It’s an older Deep Blue. The return is 3/4” (and changing that to 1” isn’t an option) and the drain is 1”.
Because it’s an older tank there is no second emergency drain.
**update: Weir brought up, RFG removed (it was an older style), inlet checked and chiller outlet set to 50%.
It barely went up ¼”.
I went from pump to check valve to to 2’ tube . Filled 5 gallons in 30 seconds in 32 seconds.
That’s barely 600GPH. Either the check valve is bad or the pump is. Which is crap because this is the replacement pump. (First one came in used. Coral Bargain Warehouse wasted no time and made things right and got me a replacement pump. Buying local rocks!!)
Update 2: valve opens with zero resistance. 

