01-20-2010, 10:00 AM
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Byron, don't want to highjack the thread, but wanted to say that I got talked into getting the Flourite, not knowing a thing about the live plant world in fish tanks. Anyway, I am not 100% sure I am going to get real serious right now with live plants. Even if I do or don't is this flourite substrate going to give me issues? I have gravel on top which obviously gets mixed together as time goes on from gravel cleaing. I rinsed it real well before putting it in the tank. Thanks.
Originally Posted by Byron
This is fine as far as it goes, but it still begs some questions. Any nutrient-laden substance is bound to lose its nutrients in time if something is using them, unless it somehow gets replenished. The soil in my garden will eventually be unable to support the plants, which is why we add manure periodically, and nutrients come via rain, and decomposing plant matter, bird droppings, insects, earthworms...there is a complex process going on to replenish the nutrients. At some point this "gravel" must deplete itself, though I accept that the aquarist may re-set the tank before this point is reached.
The point they make about nutrient release dependent upon the plant roots is significant. This goes along with the claim that the nutrients will not just leech into the water column. And that answers your (Stephanie) subsequent question about overloading the aquarium. The same seems to be true of substrate fertilizer sticks and tabs; they are only going to benefit the plants with roots in the substrate. And bearing this in mind, I agree with Angel059 that regular small-grain gravel will suffice, with substrate fertilizer added for those plants that require it. For more than 15 years I never used substrate fertilizers, just plain gravel, and the swords (which would of all plants most benefit, as I have subsequently discovered) grew very well with just liquid fertilizer.
Last edited by HollyinWA; 01-20-2010 at 10:05 AM..