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Discussion Starter · #1 ·
I have Profile in my tanks. It's mostly getting onto 10 years old now. Does it ever need to be replaced?

[edit] Ugh, "Fluorite." Lesson: proofread your titles.
 

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Flourite is inert and contains nothing that's really usable for plants. So there's nothing to really "use up."

You have to provide your own fertilization - either via root fertilizers in the form of tabs or from dosing fertilizers in the water column.

It can break down over time and continued use, if that's what you're asking.
 

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Yea, it won't ever break down since it's inert. I do find that I need to add some flourite back every once in a while though. Everytime I take out moss tiles to trim I always lose a few pieces that the moss clings too.
 

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Discussion Starter · #5 ·
Hmm, what about all this ion exchange stuff, though? I never took chemistry, so I'm clueless. I know I used this chart long ago to decide which substrate to go with, and it talked about calcium and iron, blah, blah. This stuff can't be just like plain gravel with all the cost of it, can it?

[edit] Not ions but "Cation Exchange Capacity (CEC.)"
 

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Basically the draw for using fluorite is the CEC or "sponge" effect. It has the ability to hold onto nutrients until the plants can use them.
 

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Discussion Starter · #7 ·
Basically the draw for using fluorite is the CEC or "sponge" effect. It has the ability to hold onto nutrients until the plants can use them.
Ah, ok, so it refreshes? Like the way you can recharge ammo-chips with aquarium salt? :thumbsup:
 

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Discussion Starter · #9 ·
Awesome. Thx!
 
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