Advice on my new build...specifically a water drain...

Istanbul

New member
Hi,

I am currently in the process of designing my new tank.

It will be placed in a double garage conversion (which is yet to get underway).

The tank will most likely measure 9ft x 2.5ft (w) x 28" (h).

28" high because that's the highest I've been told I can do in 12mm before the prices more than double! And 2.5ft wide as it will need to get through a door, which should just allow for such a size!

Anyway...okay....I think this will be a freshwater system (:uzi:)...I know I'm obviously in the wrong place for that, but I've been searching the internet far and wide for info and what to do in terms of tank construction/plumbing etc and I am ALWAYS linked back to the ideas and discussions on this site. People know what they are talking about here.

So basically, I am sumping it. With a central weir. 2 50mm out, and 1 35mm in...how does that sound? Return pump recommendations? With it being a freshwater system, and requiring large water changes, I want a system in place to make this as easy as possible. No buckets, butts, pipes to trudge about every week. I want this plumbed in. Returning the water isn't a problem, I will have a pipe connected to the mains (hot and cold, temp isn't overly important I've found over the years as long as it is reasonably close) going through a carbon system and back into the tank. But the water drain, without having to put a pump in each week...what are my options? A hole with a valve to drain out? I don't know. I will require at the very least 50% drain each week, so I don't think it's possible to drain from sump etc? Drain will be connected to outflow pipe of nearby sink and exit the house that way. Any ideas?!?!

Cheers, hope you salties don't mind me asking. :cool:
 
Really? Lots of highly reputable manufacturers with experience have told me up to 28-30". Think they mentioned a safety factor of 2. Is that enough? Confused.
 
Just to spoke to one of the builders and they said that because of the way the tank is braced at the top (sides and throughout the middle) with thick braces - it isn't an issue. He said that the way they brace, you are dramatically increasing the safety factor. Does that sound about right?
 
I can't speak to the safety of a tank that size, but I may be able to help with the plumbing.

A DIY manifold is easy to put together using PVC parts and some gate (not ball) valves. The gate valves will cost a bit more that ball valves (and be harder to find) but work much easier. Just get a pile of PVC "T's" and 90's and play with them to get an idea of how you'll want it. Don't glue anything until you have finalized it. On my Basement system I had several returns to different areas of the tank as well as on that hooked up to a garden hose and went to the utility sink for the easiest water changes ever. Open the valve, let the water go away, close it and fill the tank back up. I could easily do a 50g WC in 15 minutes.


As for return pump, there are many options. I used a Reeflow DART (external) on my ~300g total volume system and it is a workhorse. There are also many options for internal (submersible) pumps depending on how much flow you are looking for.

Keep us up to date on the project!
 
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