OldSaltMan1
In Memoriam
I am still planning my 120 upgrade and would like some help. Where should the drains/closed loop returns be drilled? How many holes / what size? I can drill what ever I just am not sure what I need to get the best results.
where to drill?
- Thread starter OldSaltMan1
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OldSaltMan1
In Memoriam
I have not decided on the pumps yet. Are you talking about just one 1" drain with several 3/4" returns? Is that enough flow for a closed loop with a sump?
billdogg
Well-known member
the drain should be the same diameter as the input to the pump. the returns can be whatever combination of sizes you like - most commonly 3/4 or 1" for a 120. If it is a true closed loop, the drain can be wherever you like. I prepfer my returns just below the surface to increase 02 exchange. JMO
OldSaltMan1
In Memoriam
would it not need two drains? One for the external closed loop and one for the sump/skimmer etc?
OldSaltMan1
In Memoriam
Thanks, I am going to drill on the sides so I will remember to keep them close to the top.
Pbrown3701
New member
also, remember not to drill any hole closer than 1 diameter distance to the edge of the pane of glass you are drilling.
OldSaltMan1
In Memoriam
Thanks, that is something else I didn't think about.
james3370
Premium Member
tank is an oceanic 50 (~42 gallons) & here is how i've laid mine out
* the black is the 700gph overflow kit from glass-holes.com that is the overflow box w/ 1 1/2" bulkhead. that will flow into my skimmer section of the sump
* green at the top are the dual 3/4" returns from the sump being pumped by an ocean runner 3500 (~900pgh). i'm thinking about putting hydor flow deflectors on both of them to randomize the flow at the top & also keep the surface aggitated
* red are the 4 3/4" bulkheads for return side of the closed loop. those will have short loc-line w/ flat nozzles pointed in random directions
* blue are dual 1 1/2" bulkheads for feed to closed-loop pump which will be a mag 9.5 mounted externally. these will have the bulkhead strainers that look like this:
i have bought an oceans motions 4-way, but i might not use it & i might just do a regular 4-way t-fitting on the return side of the pump....not sure yet
mike at glass-holes.com set me up a killer deal on all the bulkheads & stuff.....they f'n ROCK!!!
* the black is the 700gph overflow kit from glass-holes.com that is the overflow box w/ 1 1/2" bulkhead. that will flow into my skimmer section of the sump
* green at the top are the dual 3/4" returns from the sump being pumped by an ocean runner 3500 (~900pgh). i'm thinking about putting hydor flow deflectors on both of them to randomize the flow at the top & also keep the surface aggitated
* red are the 4 3/4" bulkheads for return side of the closed loop. those will have short loc-line w/ flat nozzles pointed in random directions
* blue are dual 1 1/2" bulkheads for feed to closed-loop pump which will be a mag 9.5 mounted externally. these will have the bulkhead strainers that look like this:
i have bought an oceans motions 4-way, but i might not use it & i might just do a regular 4-way t-fitting on the return side of the pump....not sure yet
mike at glass-holes.com set me up a killer deal on all the bulkheads & stuff.....they f'n ROCK!!!
OldSaltMan1
In Memoriam
Thanks for the diagram and info. That is just what I was looking for. Very nice.
