I was looking at my local home improvement store for CHEAP substrates - and found pea gravel in a semi suitable size for $2.22 for 3 cubic feet, which should do 2 inches thich at 3 ft square according to the ad.
Is there anything wrong with using pea gravel? Does it have rock in it unsuitable for the aquarium that would raise hardness, etc?
Thanks!
Is there anything wrong with using pea gravel? Does it have rock in it unsuitable for the aquarium that would raise hardness, etc?
Thanks!