Reef Central Online Community

Home Forum Here you can view your subscribed threads, work with private messages and edit your profile and preferences View New Posts View Today's Posts

Find other members Frequently Asked Questions Search Reefkeeping ...an online magazine for marine aquarists Support our sponsors and mention Reef Central

Go Back   Reef Central Online Community > General Interest Forums > Do It Yourself
Register Blogs FAQ Calendar Mark Forums Read

Notices

User Tag List

Reply
Thread Tools
Old 08/02/2014, 08:12 PM   #301
karimwassef
Registered Member
 
karimwassef's Avatar
 
Join Date: May 2004
Location: Dallas, TX
Posts: 10,903
Skimmer running wet right now, not much waste for a 700 gallon system.


karimwassef is offline   Reply With Quote
Old 08/03/2014, 11:14 AM   #302
Joel_155
Registered Member
 
Joel_155's Avatar
 
Join Date: Aug 2011
Posts: 1,411
That's awesome. How did you put together your protein skimmer? Also did you make the Beckett or did you buy one online?


Joel_155 is offline   Reply With Quote
Old 08/03/2014, 12:27 PM   #303
karimwassef
Registered Member
 
karimwassef's Avatar
 
Join Date: May 2004
Location: Dallas, TX
Posts: 10,903
I made two of my own injectors with 1" penductors in a 2" PVC housing and a 1/2" air inlet.

They generate gallons of air. I put the expel hose into a bucket in my sink. The wet skimmate filled it and the air was being pushed out through the water so I could see how much was being injected.

I glued the acrylic with acrylic solvent.



Last edited by karimwassef; 08/03/2014 at 12:37 PM.
karimwassef is offline   Reply With Quote
Old 08/03/2014, 12:36 PM   #304
karimwassef
Registered Member
 
karimwassef's Avatar
 
Join Date: May 2004
Location: Dallas, TX
Posts: 10,903
The bond from PVC to acrylic was tougher. I used white epoxy putty to hold it in place (mechanical) and then used goop to create a watertight and semi-flexible joint.

An unexpected effect is that this large column inside my humid garage 'sweats' a little. So there's a small non-growing layer of freshwater around the base. It's not a leak because I let it dry and looked for any salt crystals after running for weeks this way - nothing.

I declined to actually taste it...


karimwassef is offline   Reply With Quote
Old 08/03/2014, 12:42 PM   #305
karimwassef
Registered Member
 
karimwassef's Avatar
 
Join Date: May 2004
Location: Dallas, TX
Posts: 10,903
One more little DIY in there. I had an old premade skimmer that used bio balls for all injection. It was about 18" or 24" tall. I removed the top from the base and cut off the bioball pipes. I converted them into my outlet.

I put my skimmer (inlet, injectors, etc) in the middle with the old skimmer base underneath and the old skimmer body and top above.

Then I used the old outlet in the base to feed the re injection pump.

I can actually turn the air injection & re circulation off and the skimmer stays white with bubbles for minutes.


karimwassef is offline   Reply With Quote
Old 08/03/2014, 07:05 PM   #306
Joel_155
Registered Member
 
Joel_155's Avatar
 
Join Date: Aug 2011
Posts: 1,411
Do you have any video of it running? I'm not sure if you posted it before


Joel_155 is offline   Reply With Quote
Old 08/03/2014, 08:02 PM   #307
karimwassef
Registered Member
 
karimwassef's Avatar
 
Join Date: May 2004
Location: Dallas, TX
Posts: 10,903
I'll take one tonight. I'll also post the 3D drawings


karimwassef is offline   Reply With Quote
Old 08/03/2014, 08:37 PM   #308
karimwassef
Registered Member
 
karimwassef's Avatar
 
Join Date: May 2004
Location: Dallas, TX
Posts: 10,903
 photo ps1_zps0d91a438.jpg


karimwassef is offline   Reply With Quote
Old 08/03/2014, 08:38 PM   #309
karimwassef
Registered Member
 
karimwassef's Avatar
 
Join Date: May 2004
Location: Dallas, TX
Posts: 10,903
 photo ps2_zpsd6faaf25.jpg


karimwassef is offline   Reply With Quote
Old 08/03/2014, 08:39 PM   #310
karimwassef
Registered Member
 
karimwassef's Avatar
 
Join Date: May 2004
Location: Dallas, TX
Posts: 10,903
 photo ps3_zps210830f8.jpg


karimwassef is offline   Reply With Quote
Old 08/03/2014, 08:39 PM   #311
karimwassef
Registered Member
 
karimwassef's Avatar
 
Join Date: May 2004
Location: Dallas, TX
Posts: 10,903
 photo ps4_zpse3658079.jpg


karimwassef is offline   Reply With Quote
Old 08/03/2014, 08:40 PM   #312
karimwassef
Registered Member
 
karimwassef's Avatar
 
Join Date: May 2004
Location: Dallas, TX
Posts: 10,903
 photo ps5_zpsf18e971f.jpg


karimwassef is offline   Reply With Quote
Old 08/03/2014, 08:40 PM   #313
karimwassef
Registered Member
 
karimwassef's Avatar
 
Join Date: May 2004
Location: Dallas, TX
Posts: 10,903
 photo ps6_zps85782da6.jpg


karimwassef is offline   Reply With Quote
Old 08/03/2014, 08:47 PM   #314
karimwassef
Registered Member
 
karimwassef's Avatar
 
Join Date: May 2004
Location: Dallas, TX
Posts: 10,903
 photo b868233b-5d68-47e6-98d4-7e727dcd93ce_zps20c826f3.jpg


karimwassef is offline   Reply With Quote
Old 08/03/2014, 09:41 PM   #315
karimwassef
Registered Member
 
karimwassef's Avatar
 
Join Date: May 2004
Location: Dallas, TX
Posts: 10,903
I did add a line to the outside so it draws in fresh air


karimwassef is offline   Reply With Quote
Old 08/03/2014, 10:20 PM   #316
karimwassef
Registered Member
 
karimwassef's Avatar
 
Join Date: May 2004
Location: Dallas, TX
Posts: 10,903


http://s1062.photobucket.com/user/ka...d09e3.mp4.html


karimwassef is offline   Reply With Quote
Old 08/05/2014, 10:16 PM   #317
Joel_155
Registered Member
 
Joel_155's Avatar
 
Join Date: Aug 2011
Posts: 1,411
Wow that thing is super tall!


Joel_155 is offline   Reply With Quote
Old 08/06/2014, 05:35 AM   #318
karimwassef
Registered Member
 
karimwassef's Avatar
 
Join Date: May 2004
Location: Dallas, TX
Posts: 10,903
It's ~12 foot total and the main column is 10ft.
Since the re circulation rate is 6000gph and the the pass through rate is ~1500gph, there is a 4x multiplier too making it effectively ~50ft of cross air/water scrubbing before the inlet water reaches the exit.

The bubbles are also very fine. It looks more like white smoke than a recognizable bubble.

It is a pain in maintenance though with the cup 11.5ft in the air.


karimwassef is offline   Reply With Quote
Old 08/08/2014, 06:51 PM   #319
Joel_155
Registered Member
 
Joel_155's Avatar
 
Join Date: Aug 2011
Posts: 1,411
Question for you on your Beckett injector? I'm in the process of modding my old cadlights TIA1150 to operate from an external pump (instead of one mounted in the base of the skimmer) and use a different venturi. I have a mazzei that I bought from them but I'm curious about a Beckett injector also. Did you buy your injector or make it?


Joel_155 is offline   Reply With Quote
Old 08/08/2014, 08:27 PM   #320
karimwassef
Registered Member
 
karimwassef's Avatar
 
Join Date: May 2004
Location: Dallas, TX
Posts: 10,903
No. I made it out of a penductor (available from a number of places for ~$15) and PVC.

Essentially, this is exactly how fire hose injectors are made for fire trucks- the 4 openings on the sides if a penductor suck air in as the water is forced through the restricted shape in the middle. It's essentially a super mixer and can be used to mix has into liquid or liquid into liquid.

So, I use an air inlet on one side to feed air into the opening.

The difference is that a venturi or mazzei injects some gas into the liquid. The penductor can inject 4x the gas to liquid ratio! In my case, I only use one side, so I get a little over 1:1 gas:liquid. Gas is compressible so it's not quite as high- so I think it's 1:1... but still massive air intake.

There is one penalty and that's the pump. You need a pressure pump, not a flow pump. That generates more heat and consumed more electricity but I think it's worth it.

I use two of them and recirculate 4x.


karimwassef is offline   Reply With Quote
Old 08/08/2014, 08:32 PM   #321
karimwassef
Registered Member
 
karimwassef's Avatar
 
Join Date: May 2004
Location: Dallas, TX
Posts: 10,903
Post 313 shows the internals. It's a 2" T PVC with the penductor positioned so that the side of the T (with the air inlet) lines up with one of the openings. I could have used a PVC cross (+) to get 2x the gas - in retrospect. Or even a 6 way with 4 air inlets and 2 for the water in/out. Maybe a future experiment.

I used a 1" union coupler and a 2" union coupler to connect the water inlet and outlet. The air inlet is reduced to 3/4" and a valve so I can reduce the air intake.

I run the air intakes outside the house for fresh air.


karimwassef is offline   Reply With Quote
Old 08/08/2014, 08:33 PM   #322
karimwassef
Registered Member
 
karimwassef's Avatar
 
Join Date: May 2004
Location: Dallas, TX
Posts: 10,903
I used epoxy putty to hold the pieces in place and then goop to seal them.


karimwassef is offline   Reply With Quote
Old 08/08/2014, 08:34 PM   #323
karimwassef
Registered Member
 
karimwassef's Avatar
 
Join Date: May 2004
Location: Dallas, TX
Posts: 10,903
One more thing. This doesn't work below water level of the skimmer. It must be above the skimmer's waterline. That's why I raised them from the original design.


karimwassef is offline   Reply With Quote
Old 08/08/2014, 08:40 PM   #324
karimwassef
Registered Member
 
karimwassef's Avatar
 
Join Date: May 2004
Location: Dallas, TX
Posts: 10,903
The air filled lines have to be pretty large so the bubbles stay as fine as possible until they're injected into the main column.

I inject both at the same level in the same direction but turned slightly up and to the side so they climb up the sides like a double helix.

After multiple circulations, the helix isn't visible but it's still there to create an even longer cross-flow path.

So - huge air volume, dual injected, multiple passes and 10' chamber. Overkill so I turn it off at night.


karimwassef is offline   Reply With Quote
Old 08/12/2014, 04:41 PM   #325
karimwassef
Registered Member
 
karimwassef's Avatar
 
Join Date: May 2004
Location: Dallas, TX
Posts: 10,903
First recorded death - murder

 photo 1CC32E55-A7FE-41A5-B40E-D99B7C0587E0_zpsospd3hkz.jpg

I thought Arrow crabs were reef safe... Poor damsel


karimwassef is offline   Reply With Quote
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump


All times are GMT -6. The time now is 05:17 PM.


TapaTalk Enabled

Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2018 Axivo Inc.
Use of this web site is subject to the terms and conditions described in the user agreement.
Reef CentralTM Reef Central, LLC. Copyright 1999-2014
User Alert System provided by Advanced User Tagging v3.3.0 (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.