you could, but it would look very ugly. you might want to try pebbles or gravel as they are much prettier and are easier to gravel vacDano83 said:
That is quite subjective I'd.say.nathanman said:
I bought a bag of slightly bigger ones and couldn't find a way to make them work for me intact, but they bust up beautifully for coarse sand. I have been building height for more expensive substrate (contained) and biological filtration, I can bust them into smaller pieces for mechanical filters, and am considering building moss walls etc, at a future date. They're useful, I just didn't groove on the appearance as they came- but once I got a pick and started busting up ohko stone, I stopped being afraid to master my lava rocks and make them suit MY needs, lol. Be bold! Good luck!Dano83 said:Hi,
I've been thinking about using black lava 3/4'' big as substrate and was just wondering would this be ok?
I have a 20 gallon long and will be stocking it with zebra danios and a few ghost shirmp
Yes with a lava stone substrate I can’t imagine youd have any nitrate! Once it established itself. I break up lava stones when starting a new tank and add them to the substrate for this reason.K5MOW said: