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View Full Version : cinderblock INSIDE your sump..


BrokeColoReefer
07/30/2007, 10:54 AM
I am thinking about putting some cinderblock inside my 100 gallon rubbermaid. Im thinking this will be good surface area for bacteria to grow on, should i worry about any thing leaching out?

bhdmc
07/30/2007, 01:30 PM
I would use only LR and not cinder block.

edwing206
07/30/2007, 02:00 PM
You could get a lot of base rock instead.

Frick-n-Frags
07/30/2007, 02:03 PM
cinderblock is USUALLY fine (no I'm not going to use one either :D)

I have more of a question about wanting bacteria in the sump. Why?

Scooter12ga
07/30/2007, 02:24 PM
If I were you I would cure it like you would with DIY rock. I put a cinder block in my pond (100's of gallons) to hold up a potted plant and woooo hooo did the PH spike.

BrokeColoReefer
07/30/2007, 07:04 PM
well, i dont really need the live rock, i have over 300 lbs of it. I need some somthing to put some equipment on, i have other ideas like pvc racks, i was thinking that cinderblock would be a easy soultion.
The bacteria i speak of is the benifical type, i dont think i could have to much :)

Hormigaquatica
07/30/2007, 07:46 PM
Ive used them in large sumps before with no ill effects.

AquaKnight
07/30/2007, 07:57 PM
Hmmmm.... I wonder if someone in a coastal area could buy a nice amount and cure them, then sell 'em off for a decent (oops, I mean tank funding ;)) profit...http://xs215.xs.to/xs215/07200/thinking.gif

BrokeColoReefer
07/30/2007, 08:39 PM
i think i will give it a whirl. First i will cure it out with live rock for a month then dunk it in the sump.
thanks for all the informative posts.