flourite acting like concrete? - The Planted Tank Forum
 
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post #1 of 6 (permalink) Old 10-15-2012, 11:32 PM Thread Starter
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flourite acting like concrete?

While moving some plants the other day i stubbed my finger on what felt like a large rock. I pulled it up and it turned out to be a mass of flourite that had fuzed together. I was able to crumble it in my hand with a good bit of force, but i was wondering what would cause this, it was only in a couple spots in my tank. The stuff holding it together was a white/gray color, almost like mortar.

"A fish tank isn't a pet, it's a t.v. that you gotta feed."
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post #2 of 6 (permalink) Old 10-16-2012, 01:17 AM
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are you using anything else in your tank? soil, MTS, or just straight flourite?

Maybe there were some carbonates that recrystallized and cemented the flourite toghether.

What about the whitish substance, could you tell anything about it, whether it was hard/soft, if it changed on drying out?

may be some bacterial/fungal biofilm or something, if it's a new take, it might go away in a bit after things get settled, if it's established, maybe there was some nutrients in that area (dead plant roots/rhizomes, dead snails, etc.?)

just guessing mostly.
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post #3 of 6 (permalink) Old 10-16-2012, 02:08 AM Thread Starter
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the bottom layer is eco complete, then the flourite, then topped with some natural river gravel from my lfs.

The tank has been running for almost two years now. I'll have to pull some gravel out and let it dry and see what happens, i just crumbled it as i found the clumps, but i can still see it stuck on pieces of gravel. The white residue was pretty hard, it took a bit of force to get it to break up.

there are dead roots and snails all over I'd assume, i have red rams, trumpet snails (a few of the big ones are over an inch long), and nerites. Next time i find a clump I'll take a pic then dry it out and see what happens.

"A fish tank isn't a pet, it's a t.v. that you gotta feed."
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post #4 of 6 (permalink) Old 10-16-2012, 04:13 AM
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Are you dosing a hardness booster with your ferts?
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post #5 of 6 (permalink) Old 10-17-2012, 05:50 AM
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*shrugs* I don't know. If you've been running your tank for a while, and everything seems okay, it's probably not harmful

(yeah, helpful...) I'm kinda curious though, if you find out what it is from someone/somewhere else, please post here, I'd like to hear what it is.
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post #6 of 6 (permalink) Old 10-18-2012, 01:28 AM Thread Starter
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Quote:
Originally Posted by TheFoleys View Post
Are you dosing a hardness booster with your ferts?
I don't use anything other than fish and snail poop.


If i find out, I'll let ya know loch, i had the same thing happen with the black flourite in my shimp tank. I had nothing else mixed in with that.

"A fish tank isn't a pet, it's a t.v. that you gotta feed."
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