Need your thoughts

[marinelife]

I am thinking of adding a closed loop to my tank. I currently have the following:

1 Waveline Apex Ready DC10000II water pump Dec 2015 - return pump
2 6100 streams Feb 2003
1 wavebox Nov 2005
1 wavebox June 2007
2 6105s streams March 2014

As you can see some pumps are getting old and I fear they will not last forever. I am thinking closed loop with the 2 6105s left in the tank.

My tank is 375 gallons made of 1" acrylic. I am thinking I can do a larger water change and drill a hole about half way down the end of the tank. I am thinking 2" bulkhead with strainer and I have a 2" ball value.
Do you think I am risking to much drilling a hole in a tank with some water in it? The ends is covered by a cabinet that holds all my equipment.

For the return side I would drill 4 1" or so holes to have the plumbing come thru the bracing. I already have one hole from a return hole I am not using so I would only need 3 more.

then what pump would you use?
I was thinking another waveline or Ecotech Marine Vectra L1

Thoughts?

 

[Dmorty217]

Just so the water level is below where the holes are being drilled you will be fine... so when are we doing this? I have the L1 as you know but you won't be happy with the flow from one L1. You need something that will push closer to 5,000gph

 

[marinelife]

I was kinda thinking I may need a bigger pump, could go with a none DC but liked the option of having flow out of the CL change.

 

[Ron Reefman]

I have a CL on my 180g reef. I have an OceanMotion with 4 outlets (3 at a time open). I use an original Jebao DC12000 as an external pump on the CL and it runs at full speed 24/7.

 

[Dmorty217]

No one else has a opinion on this!??