Glock Shooter

For a planted tank (30 gals - 55watt of light), which size grain of Oynx should I use ... sand or gravel?

Thanks,

Mike

Simpte 27

I perfer sand but either will work as long as the gravel isn't too big. You might want to add more light to the tank though.

turbomkt

If you're talking about the two kinds of Onyx, I'd say sand. IMO the gravel is too big (Larger than eco-complete).

If one bag of eco-complete wasn't enough for my 10g, I'd have put onyx sand over it.

--Mike

Sir_BlackhOle

The sand is very coarse and not real "sandy" IMO. I like it!

James..........

Onyx Sand is NOT coarse. Onyx Gravel is coarse, in most cases TOO coarse for good plant growth.

James Purchase
Toronto

Sir_BlackhOle

I disagree. If you compare onyx sand to, say, pool filter sand then the onyx is very coarse IMO.

sorenweis

I have onyx sand mixed with some fluorite in my tanks and I think it is wonderful. Although onyx sand is more coarse than pool sand it is much much smaller than the onyx gravel (which are more like boulders in a planted tank). I was thinking of using the gravel, but after seeing how large each chuck was I quickly changed my mind.

Left C

About a year ago, a rep for Seachem told me to use the Onyx Sand instead of Onyx Gravel. I have a tank with a 50/50 mix of Onyx Sand and Flourite.

Glock Shooter

Can you shoot a picture of your mixture? I was thinking the combination of Onyx and Flourite would be stunning.