Fluorite

OR - do it with the hose, outside, in your lawn, so you don't waste all that fertilizer.

for the mix, whatever you feel looks best.
 
good one hebily.

what do you have for substrate right now? i would probably just use one kind of substrate.
 
it won't stay totally layered... you'll wind up with some flourite on top, but if you put a good, thick layer of sand, it should stay pretty layered. Your plants shouldn't care, either way. Be careful of gas bubbles, though, putting a layer of sand above something that can decompose.
 
I agree with rinsing thoroughly. It can take a while too. I used a colander and a large tote and did the rinsing outside in the yard. Then, when I filled the tank, there was still some cloudiness. A few water changes later, along with wiping down the inside of the glass during those water changes to remove the dust that settled, and the water was sparkling clear. I've used fluorite in layered setups and some mixxed with sand. As mentioned, when mixxed with sand the fluorite will eventually wind up on top.

Mark
 
I put mine in a big rubbermaid tub and rinsed it with the hose outside.
 
What I heard you can do that works to keep it from getting cloudy is to rinse it well then let it dry in the sun. I have heard of people using this way successfully.
 
Hmmm...I'd really like to have a white sand as a substrate but if it mixes maybe thats not a good idea to mix. But at the same time I dont want the fluorite to go to waste and I would like to give it a try.

What if I physically separated the substrate, like little pockets of the fluorite where the plants will be but sort of hidden by the hardscape. Any ideas how I could pull that off?
 
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