# How big should your sump be?

**a**place for

**sumps**on very

**large**freshwater tanks, but most tanks – even up to 240 x 60 x 60 cm/94” x 24” x 24” – can be run with

**a**lot less fuss on

**a**couple of

**large**external filters.

Also to know is, how do I calculate my sump size?

1 feet cube area (1′ length 1′ width 1′ height) will preserve equal to 28 ltrs of water. Therefore, multiply the **sump** cubic area with 28 to find out the water storage **capacity** of **sump**/tank in liters. Above **formula** is applicable if your tank appear as rectangle or square in shape.

**What size sump for 100 gallon**- Reef Central Online Community. Most people simply use the largest standard-size

**tank**that'll fit in their stand. A 75g (48x18x18) would work in your case.

Just so, how big should my aquarium sump be?

What **Should** Be The **Size** of Your **Sump**. At a minimum, your **sump should** be 20% of your tank. If you have a 75 gallon tank, then your **sump should** be at least 15 gallon. But in reality, you **should** go for the biggest **size** that fits in your stand (remember, more water volume, more space for media, etc).

You may find due to the **90 gallon size** (usually 18-18.5" wide **tank**) of your cabinet your choices are limited. I put a RS-200 Eshopps **sump** under mine. It's a basic **sump** with two filter socks. Very quiet, just the slightest trickling sound of water flowing through the socks.