Sumps!

[vinney]

I do not have a tank yet, but space is a big issue for me with the kiddos and size of the house. I have been wanting to start a reef tank at some point soon and everyone has been telling me bigger is better. Do sumps count as that additional gallons on say a 20 gallon tank with a 20 gallon sump? Is that how it works I have no clue, really just trying to learn and get a better understanding. Thank you in advance!

 

[Waters]

Yes, any additional water volume adds towards your total system volume as far as system stability. Doesn't count towards fish that require a "specific" size tank though.

 

[edsbeaker]

I do not have a tank yet, but space is a big issue for me with the kiddos and size of the house. I have been wanting to start a reef tank at some point soon and everyone has been telling me bigger is better. Do sumps count as that additional gallons on say a 20 gallon tank with a 20 gallon sump? Is that how it works I have no clue, really just trying to learn and get a better understanding. Thank you in advance!

Hi, and welcome!
When you see an advertisement for a tank with a sump in a cabinet underneath, the volume of water will be just for the tank and does not include the additional number of gallons the sump will hold. The sump volume will be stated somewhere else in the description.

This is a little different if you are buying an AIO (All in One) set up that has the sump area behind the main display. The display has a built in wall dividing the display tank from the sump area. These tanks will state the total volume of water which includes both the display tank volume and the sump volume. The individual volumes will be stated somewhere else in the description.

Now in either case, if you are adding medication, salt, dosing additives, you base this on the total volume of water, display tank plus sump.

And as @Waters stated, when adding fish, the only volume of water that’s considered is within the four walls of the display tank. Fish load is determined by space in the display tank itself, not water volume.

Hope this helps!

 

[Mr. Mojo Rising]

Personally speaking I've never touted the "bigger is better", I prefer small tanks and I feel and have always suggested that small tanks are better for new hobbyists.

I would suggest an all-in-one tank, or a normal rectangle tank and get hang-on-back (hob) equipment, small tanks require very little equipment anyway. But a small sump for a small tank doesn't seem feasible to me.

 

[edsbeaker]

Personally speaking I've never touted the "bigger is better", I prefer small tanks and I feel and have always suggested that small tanks are better for new hobbyists.

I would suggest an all-in-one tank, or a normal rectangle tank and get hang-on-back (hob) equipment, small tanks require very little equipment anyway. But a small sump for a small tank doesn't seem feasible to me.

^ I 100% agree with this statement.

I’ve had tanks from 20 gallons up to 170 gallons. I was never comfortable with taking care of larger tanks and always seem to downsize to smaller set ups.

I just tore down my 170 gallon and replaced it with a 25 gallon AIO set up a couple of weeks ago. The 170 was hard to reach all areas of the tank, expensive to run, and Of course, a much higher $$$ loss if something went wrong. I think a good size tank is what is manageable for you, not someone else. Bigger is better in certain situations, for instance, if you want to keep certain species of fish like tangs, but otherwise that “Bigger Is Better” statement has NO merit and is misleading. As a first tank, if you want a bigger tank, I think something in the 75 gallon size works well, But I have to say that their are plenty of us running smaller tanks that wouldn’t change a thing!

 

[1ocean]

Important note with sumps, you have to remember to get a sump that is big enough to handle the water drop from the main display if the power should go out or if you shut return pumps off during feeding.
I like having a bigger sump so that anything that might leak water is in it.
I am also not in favor of sumps with a lot of chambers; this restricts what you can fit in it.
I am building an open sump design with one chamber, intake water from display tank.
Sump is 42"x30"x16"