Scott's 135 gallon display tank build

[Gp Scott]

Originally Posted by mihaivapler

i have it the same,just before flows in the sump,but in his case having the sump in the basement it will be very hard to adjust it..and must be a gate valve,the regular valve it is very hard to adjust..you can see in the picture,the left pipe is the emergence and the right one is the main drain whit a 1" gate valveAttachment 13077

I'm sorry I'm still not understanding Y I would put a valve there when I could adjust the flow going in and out by the valves going into the tank from pump and the dorso makes the water flow smoothly by putting air behind water like the pluming in your house. My line doesn't free fall into sump so the only air it gets is from the dorso it was air locking before I put it on. I may be wrong but in my theory putting a valve there is asking for trouble plugging easy because your restricting the flow.

The line on the left is emergency

[mihaivapler]

by adjusting the valve from to pump is not the best idea.it just put extra pressure on the pump which will cause premature wear f the pump..
the herbie style is absolute quite,dead silent, and if is done correctly it is 100% safe.you need to have the emergence drain which you have.i have this system on all my systems and never had an issue,in case you have a snail trapped in the valve the emergence drain will carry the water..i have this system for 2 years and never had it clogged.and the other advantage over the dorso pipe is that you have 0 air going in the drain ,whit the dorso you have some noise from the air being sucked in the pipe..and because you have the sump in the basement it will be no noise from the pumps and skimmer..this is just my opinion.