greengrabber vs crushed live rock?

[anders moon]

hey
Im on the way back to this forum with a new 360liters tank...
the new floating scrubber is very impressive and I will try to make a scrubber that is placed about 3cm under water and lots of watermovement and air bubbles arround it...

indstead of the greengrabber stuff I will cover the sides of the box with crushed live rock and small koral pieces... would you guys think this will work?

[SantaMonica]

Should be fine. Strings are important too.

[anders moon]

alright! I will put the strings under the silicone i wil use to attach the small pieces of live rock...
the floating ATS is a awesome new version!!!

which kind of strings do it has to be, if there are any specified material at all?

[SantaMonica]

Nylon string works well.

[RyanYWG]

Hey SM, What is currently used for the grabber? I think I read it is crushed quartz? I'm thinking to make with 2-5mm course crushed quartz. I'm also thinking to make with crushed glass which is a little cheaper. Though very sharp, what are your thoughts on crushed glass?

[SantaMonica]

All of that works well. Algae uses enzymes to bore into natural silica rock on the beach and reefs, in order to get a strong hold during the waves. So the algae naturally knows what to do with anything silica.

Not so with plastic.