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silica sand?


Carnivor

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Do you have any way to test pH? Add some sand to a jar with whatever water source you will be using for the plants. Test the water first. Then test the water again 24hrs after the sand has been added. Corky has a good suggestion, but I believe white vinegar is too weak of an acid to judge the potential pH of sand.

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Tried this and aquarium sand for my pygmy drosera, and the plants in the pool filter sand are doing great so far, I've also planted some sarracenia in this sand to see how they do this summer.

 

Might be difficult to see, but the pot on the right has the pool filter sand. In that pot the plants are way healthier, lots of new growth etc. and in the other pot (with gemmae that were planted 3 weeks earlier) the plants haven't even made a carnivorous leaf yet. The pot on the right also has less algae.

(Sorry for the bad picture, quickly took it with my phone)

IMG_20170219_162804_crop_1008x604_zps9ro

I never tested the sand (simply forgot) and so far it seems to be fine.

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