Substrate additive: Laterite or Florapol?? - The Planted Tank Forum
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post #1 of 3 (permalink) Old 02-21-2005, 09:53 AM Thread Starter
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Substrate additive: Laterite or Florapol??

Hi, im setting up a 35g planted tank. My substrate is going to be 3cm vermiculite/spagnum peat mix topped with about 4cm of 2-3mm gravel.

I would like to include a substrate additive like laterite with the vermiculite/spagnum peat. Laterite and JBL Florapol (, are similar prices for 600g, but which would be more benificial to the plants with my combination of substrate? They seem to have similar properties - 'clay to bind and store excess nutrients etc' but i wondered if anyone knew the difference, if there is one? I don't think I will be using a heating cable either, unless it is really necessary - (im only growng relatively easy/hardy plants as im keeping firemouths)

Advice much appreciated, Cheers, Jack Mc
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post #2 of 3 (permalink) Old 02-21-2005, 06:51 PM
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It's hard to say without chemically analysing both products under laboratory conditions.

However, I did use a great reference to select my substrate layers which did basically this; detailed the chemical compostion of many brands and types of material, including the cation exchange capacity. Found here (I got it under the library section of AquaBotanic, but it doesn't appear to be working for me tonight!

Eheim Pimp #121

80 litre "Planted" tank
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post #3 of 3 (permalink) Old 02-23-2005, 04:20 PM Thread Starter
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Thanks for the link Stu, very useful and in-depth.
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