New Pump Needed

[azjohnny]

Thats a lot of flow through your sump for a 90 gal DT, I like to shoot for 3-5x DT or 10x your sump volume with flow, if you go too fast than your filtration ( skimmer, cheato, reactors become a lot less effective). That wont be very much flow in your the DT for circulation, Its a good idea to supplement with powerheads or a CL

 

[drock59]

Again, I am aware that this flow rate is unusual. I have been doing this a long time and I am willing to take the risks of having a higher flow through my sump.

I have a MP40 in my display and planning on a second.

 

[sirreal63]

Try the additional pump, it will give you a better idea. Once it is tuned and have gone through a few power out scenarios you will know. I spent years working for a retired master plumber who did a few jobs on the side, my own knowledge of fluid dynamics is limited, but I really feel the only way to fix it will be fixing the plumbing.

 

[drock59]

I just added the additional pump and went through a couple of "power outages." The system starts perfectly with the extra pump. I will do one more test with the power off for 15 minutes to let any water and/or air to settle and see what happens. At first glance, this looks promising.

 

[drock59]

Just did some longer power outage testing and each time the system started up within ten seconds. I am estimating around 1200-1400 gph with the other pump installed and the system works great.

 

[sirreal63]

When you get ready to replace the pumps, take a hard look at the Waveline DC10000. It is DC and controllable, you will be able to fine tune the flow and it is very energy efficient at a max of 85 watts.

 

[drock59]

Good idea. I just looked into it and the max flow is ~1300gph and max head of 10ft. Not sure that is enough oomf.

 

[sirreal63]

It should be more than you are getting with the mag 9 and 18 combo.

 

[sirreal63]

Are you sure you looked at the DC10000? Max flow is 2640, max height is 16.4, I have not seen an actual head loss chart for them though.

 

[drock59]

ATO programming for pH

ATO programming for pH

You are right. I was looking at the wrong model.

Nice price and specs.
http://www.aquariumspecialty.com/review/product/list/id/10414/#customer-reviews

Cant seem to find it in stock anywhere.

 

[acesq]

I'm curious to know what you went with. I'm planning a tank that will require a significant horizontal run for the drains (about a 5' total drop from the DT to the floor and about 20' of horizontal to the sump). I've been concerned about the ability to purge the air in a Herbie/Bean Animal set up in the event of a power outage. Is it a matter of getting enough water in the drains to push it out?

 

[HermitTheCrab]

Would like to know here as well..I have the same tank (93g Marineland cube) and run a Mag 18 in the basement with approx. 900gph.

HtC.

 

[drock59]

I actually haven't decided yet.

Still looking for an option that will meet my needs.

 

[drock59]

Please feel free to make more suggestions or opinions.

 

[acesq]

If the DC10000 is not available, you might want to look at the Laguna Max-flo pumps. The 2400 might do the trick.

http://www.fishsupply.com/shg-pt348.html

Apparently its the same motor block as ATB uses, but at a much cheaper price.

 

[aldiaz33]

I would also recommend Laguna Max Flos. Check out pg 19 of their 2013 catalog for the flow chart: http://www.lagunaponds.com/lagunaeng/careguides/LagunaPond-GTWG-2013-English.pdf

Note: in 2012 Laguna made changes to their line of pumps and labeled them "Next Generation"; there are still a lot of distributors selling the older models, so just a heads up that you should check the model # before ordering if you are looking for the specs listed in the catalog I referenced. The new "Next Generation" Max Flo 2900 (Model# PT8252) does 1585GPH @ 10' head on 112 watts whereas the older pre-2012 Max Flo 2900 (model # PT338) does 1744GPH @ 10' head on 130 watts.

Good Luck!