Hi again :-)

just got home from home depot and picked up some pea pebbles. Can i use it to cap the dirt?

One person on here replied to a question about the depth of a cap by saying that
he had read threads for months about that subject and found that caps less than 2" had more sepage problems than others with more thickness to the cap and that the finer the cap material the better/less problems it had. Sand being the one reprting the least amount of problems.
That has not been co-signed by the multitude, yet is worth mentioning.
In any event, what I'm looking at is not "Pebbles" as the name implies but rather crushed stone of some type. What type is a question you might want to verify before dumping limestone into your tank.

So this is not ideal for capping dirt? can i mix it with playsand? i also have a couple of bags of play sand.

I've not tried capping soil with gravel, only sand (black diamond actually which isn't technically sand, but I got the 20/40 grit which is the same consistency) I can get away with a .5-1" cap with that stuff.. gravel would definitely allow more seepage since is going going to compact down as tightly.

I used that same gravel to cap a 10g tank. Absolutely hated it. Switched to SAF-T-SORB from tractor supply and never looked back. In my opinion the gravel is just to course and lets the soil leach to easily to the water column.

Is the one?
http://www.tractorsupply.com/en/stor...b?cm_vc=-10005

Bump:
Maybe i can mix some safe t sorb and some playsand,

Thanks everyone! ill just return the pebbles tomorrow :-)

Yup love that stuff! 20/40 grit is great like a nice fine sand but super cheap compared to the black sands. Have used 1 1/2 bags to do substrate for: 2g, 3G (this one has soil) 7g, 12g, 20g.. Going to redo my 55g soon (will have a bit of soil when redone).

Okay now i have two choices,safe t-sorb and black blasting sand :-)

Thanks