Tropica Plant Growth Substrate 1L

  • Stock: 13 units in stock
  • Model: 612
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Tropica Plant Growth Substrate acts as a long term nutrition store for waterplants, so ensuring magnificent and healthy waterplant growth. Plant Growth Substrate is a natural concentrate of clay and sphagnum, laid at the bottom of the gravel layer when you build your aquarium. Clay and sphagnum slowly release nutrients to waterplant roots and binds nutrition in the water in the bottom layer. Removing nutrition from water reduces the risk of undesirable algae growth.

Plant Growth Substrate is laid in a 1 cm thick layer on the bottom of the aquarium, when the aquarium is built. The table below provides recommended Plant Growth Substrate amounts for a number of standard aquarium sizes. 

A layer of gravel of minimum 3-4 cm thick is then laid over the substrate. The gravel acts as a barrier between the concentrated Plant Growth Substrate and the water. Plants are planted in the gravel in the normal way and new roots quickly form in the substrate. When planting, disturb the substrate as little as possible, to avoid clay and sphagnum particles being mixed into the water.

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by Rob W.
It's only been two weeks since planting the tank so cannot tell if the substrate has had an effect on growth. However, the moneywort I have planted does seem to be appreciating the substrate! One note: I thought I could get away with having a few mm of water in my tank, but that was a big no-no. Make sure that the tank is bone-dry before adding the substrate else your tank will be filled with little bits of organic matter.

by Fabian B.
Came as described, all plants happy

by Russell F.
too early to comment but seems to be ok so far after a few weeks.

by Mark A.
A great substrate that is very clean and works well.

by Mary S.
Have only just used this product in a new tank, bit Tropica has a very good reputation and lovely plants so am very hopeful that the new tank will be a success. The substrate was very easy to use, and, once covered with a good deep layer of gravel, did not cloud the water after a couple of days settling in. Onwards & upwards!!

by Stewart H.
Quick delivery,will have to wait and see how plants like it.

Ask a question about this product
Hi, if I add this to my tank at 1cm deep then add 3cm of gravel on top will small plants like Cryptocoryne Beckettii or dwarf hair grass or other similar size small plants be able to root 3cm down to the Tropica plant growth substrate..... :-),


Yes that should be fine

Can I use a soil on top of this instead of gravel? Thx


What sort of soil are you thinking of?

Hi I poured a bag of this on TOP of my sand and plants! What should I do ? Looks great but obviously didnt read that it should go UNDER sand ! Please advise


Ummm, pour gravel on top?

Hi, Looking to use this in my Aquarium, Can I put sand on top of this or will it just make its way through the sand? Does the substrate need to be siphoned through every now and then (like you do with the sand /gravel )


it has to be capped with sand or gravel

Never plunge sand or gravel with a nutrient base - simply hover above it to remove debris

I have an established tank with just gravel. I am new to adding live plants to my aquarium. Would it be ok to remove my gravel, add this substrate and then replace the gravel back on top?


yes but you'll need to remove all your water first

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