So I started the 30g sump for my 125g tank today.
I siliconed in two glass panels, one which will create a 4"x12"x14" (WxLxH) entry chamber for the water coming from the tank, which will also house the two heaters I plan on using.
The second glass panel is 7" from the other end of the sump, and will create the space needed for the return pumps I'll be using. This leaves an 18" long chamber between the two panels, which will be my bio chamber. This chamber will be 18" long, 12" wide, and about 12" tall. On top of the drip plate will be a 2" thick polyester filter pad for mechanical filtration.








I siliconed in two glass panels, one which will create a 4"x12"x14" (WxLxH) entry chamber for the water coming from the tank, which will also house the two heaters I plan on using.
The second glass panel is 7" from the other end of the sump, and will create the space needed for the return pumps I'll be using. This leaves an 18" long chamber between the two panels, which will be my bio chamber. This chamber will be 18" long, 12" wide, and about 12" tall. On top of the drip plate will be a 2" thick polyester filter pad for mechanical filtration.









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