105G Custom Shallow Paradise

JDigital · #1 12-18-2009, 09:15 PM

Quote:

Originally Posted by lastlight

Tile on the stand before you leave would be rad too. Let me know when you can get to that bro.

... Riiiight.. I might end up getting fishytime to finish my stand for me, when I get around to buying the supplies.

Delphinus · #2 12-18-2009, 09:24 PM

Check valves suck bro.. even fancy clear PVC ones won't sell me off that idea.

I'll never trust another one again for a sump return line. Having said that, I see your outputs are near the top so you probably don't really have a huge latent problem on your hands like those who submerge their return lines at half depth or more..

JDigital · #3 12-18-2009, 09:42 PM

The math of it all works out very close.. Sump will have a 10G allowable limit, plus I have an extra 5-6G in my refuge tank. Based on where my DT water level will be relative to my return bulkhead, I shouldn't have more that 14.1G flow back to the tank even if the Check Valve fails.

kien · #4 12-18-2009, 10:06 PM

I thought that check valves worked on a spring.. doesn't that restrict flow as well ? I suppose there are non-springy check valves? I wouldn't know, I haven't used one in a zillion years.. I wonder if fishy will come over and skin my new stand as well.. I have no motivation at all to skin the new stand.. heck, i hear he is doing plumbing these days too. I should just get him to finish my build.

JDigital · #5 12-18-2009, 10:11 PM

These "fancy clear PVC" check valves, have no metal or spring inside. It works on a rubber flaps that seals shut in the event of back flow. They do affect head pressure slightly.

To each their own I guess. I'm sure if they had failed on me in the past like Tony has experienced, I'd be un-easy to use them as well. But I've got a perfect history with them so I can only advocate them.

lastlight · #6 12-18-2009, 10:49 PM

The only issue is they've failed for an assload of people lol. But it sounds like a harmless precaution as you can handle the backflow anyways I think. It's basic math but I just skimmed.

fishytime · #7 12-19-2009, 12:26 AM

The reason these plastic flap ones fail is the seal builds up with crud and then doesnt seal properly....nice thing about them (and I recommend this at shop all the time) is the are true union....so you can swap in a clean on on a regular basis and soak the original to clean it....

I used to have it in my signature that I do custom stands and canopies....If your serious Kien shoot me a PM... I w i l l d o t h e p l u m b i n g f o r y o u r a q u a i u m t o o .(wanted to be really clear in the wording there...with all the pervs around).

Looking really good there Josh....(the tank that is....darn pervs)