moondoggy4
Team RC
I know you like your Eheim Compact but one of the nice things about DC pumps is they have a gradual turn on so they will not overwhelm your drain. I used to have a problem with my old 55 gallon tank and my Mag 7 return.
It's not the drain that gets overwhelmed. I did some worse case scenarios on my tank. Power outage and complete blockage of the main drain. Power outage is zero issue but the emergency drain can't handle the flow from the return pump if the main drain gets clogged. A DC pump wouldn't change that long termI know you like your Eheim Compact but one of the nice things about DC pumps is they have a gradual turn on so they will not overwhelm your drain. I used to have a problem with my old 55 gallon tank and my Mag 7 return.
Thanks! We are super excited as it's our first!I started out using 1/2" as main, and it did not work out (flow too low). So I switched to using the 1" as main when I saw your post. Now your post got me thinking, maybe I did not do it right the first time. I'll play around with it again this weekend and see if I can make the 1/2" as main work.
congrats on the new baby.
Thanks for testing. I am positive the ½" will handle my pump. If not, I can turn it down slightly on the pump itself. I may switch to a Current USA DC pump down the road so that will give me even more control.I tested using 1/2" as main drain, and max flow you can get out of it is to drain right at the bulkhead, with nothing but a straight down pipe. I don't know the actual flow, but if I set my DCS4000 pump to max, it is not able to handle the flow, that is, the overflow box water level starts to rise.,
In my case, I am fine with the return pump at halfway setting, I think this is equivalent to about 60% setting, so about 630gph minus whatever head loss of the return. I think it should not be lower than 350 gph. If I use the head loss graph, flow would be about 400gph at 4 feet at 60% setting.
So I will change my configuration to use 1/2" as main drain, pipe is 4" below the 1" emergency drain pipe, and is just slightly below the overflow inner glass height (maybe 1/4" less). This handles perfectly my pump set halfway, and with both drains valve wide open. I can tune using the return pump dc controller.
Now with the 1" drain wide open, I know it can handle all the flow from the return if the 1/2" drain clogs.
The return flow rate for me is higher if I just use elbows at either side of the overflow box output instead of the loc lines. Meaning, for the same DC controller setting, I get more flow by not using the loc line. With this configuration, about 2.5 gallons of water goes back to the sump when return pump is powered down. If I increase the baffle height to 8" and run the return section water level at 3", then the return section alone can take the 2.5 gallons, keeping the skimmer side level at 8". This way, I won't need to turn off the skimmer when I turn off the return pump. The rest of the overflow box water is about 1.5 gallons and the sump can easily take that if I pull out the drain pipes for maintenance. I think this will be my final configuration.
... before a little guy took over the rest of the day and weekend.
Mom and baby are healthy and doing well. We should be released Monday night or Tuesday morning.
Thank you! He's been absolutely amazing so far. Lots of sleepless nights but worth itCongratulations!
Busy times will come and tank built might get delayed.
But enjoy the family!
The mdf stand I got is beyond repair so I will have to build one and want to build one like yours. Is that all just 3/4 birch plywood with no 2x4 or 1x4s?
how was the square hole with rounded corners cut? drill 4 corner holes and cut the rest with jigsaw?
can you please take pictures of the inside top? I want to see how the sides and top are connected.
how were the edges of the plywood finished?
thanks.