piper
Fishaholic
Right my idea is to make a small waterfall in my 265L tank.
Originally I was going to create this out of polystyrene, covered in cement then sealed. I'm concerned however that the roots of my plants will eventually break through the concrete allowing it to leach nasties in to my fish's water.
So I'm now thinking of using Lava rock, from what I have seen it seems very light and looks easy to cut. But is it too light to sink. Has anyone used this rock before?
Originally I was going to create this out of polystyrene, covered in cement then sealed. I'm concerned however that the roots of my plants will eventually break through the concrete allowing it to leach nasties in to my fish's water.
So I'm now thinking of using Lava rock, from what I have seen it seems very light and looks easy to cut. But is it too light to sink. Has anyone used this rock before?