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#1
11-06-2006, 04:29 PM
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You dont have to have any holes in the bottom of the tank, most people only have holes closer to the top, as long as you have good flow and direct some water down you should be fine. But i still think a regular overflow is the best way to go.
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Sean  Back in the good ole days 
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#2
11-06-2006, 07:53 PM
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Go
I built my horizontal overflow after studying regular horizontal overflow boxes. The price of black acrylic led me to this design. It cost a whopping $3 to build and has been running on my 75G. reef for a year now. It is just over 12" long but because it skims the surface from both sides it has a skimming surface area of 24". This is the same skimming surface as two 6"x6" corner overflow boxes but without the loss of all that tank volume and without needing to use durso or stockman overflow pipes. To make it even simpler one could cut away those straining teeth and fit it with gutter guard but I like to play with my mitre saw
 In my experience it is very successful and I would recommend it, or some variation of it, to others. but that's just me. ________ rolling a joint Last edited by Dale; 01-21-2011 at 01:32 PM.
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#4
11-06-2006, 09:02 PM
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Go
At first it was a little gurgly but then it settled down and is pretty quiet.
Here's a pic of the back  and a link to the whole tank build http://www.aquahobby.com/board/viewtopic.php?t=29175 ________ R80RT Last edited by Dale; 01-21-2011 at 01:33 PM.
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#6
11-06-2006, 11:19 PM
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Further to my question above, I have posted some pictures of the future location of my tank.
1. floor plan of cantiliever within house - future home of tank  2. exterior of cantiliever within house  3. existing stand - do you think it will hold 700 lbs of water?   Last edited by Josh24; 11-06-2006 at 11:33 PM.
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#7
11-07-2006, 01:40 AM
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Hi Josh,
The piping is ABS. There is some debate as to its use in aquariums (fear of leaching something??) but I think the main reason ABS isn't used for potable water lines is because it doesn't withstand pressurization. The drain isn't under any pressure load though and my reefs been running for a year with it so... I will leave it to the debating society. My returnline is 1/2" and my drain is 1 1/2" so it can handle the flow. My reef has a slow turnover rate anyways as it was set up for seahorses (they don't like high flow) and is augmented by a closed loop recirc system. If you go through the link for the tank build you will see that I test everything in my garage first so that I can make adjustments if needs be. It gurgles a bit but not that much. When the hood is closed it's silent. I have no idea about the stand/table but there are two forces at play to consider: The downward pressure The lateral sheer pressure. The downward pressure is pretty straight forward but the lateral sheer pressure is tricky. This is the pressure exerted as soon as the weight is shifted off its center of balance ie. if you bump up against the table. Most tank stands have cross bracing to withstand this pressure. I'll edit this post later with some things to look for when evaluating that table.  ________ digital vaporizers Last edited by Dale; 01-21-2011 at 01:33 PM.
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