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  1. orzparty

    Basic DWC Rez Maintenance Questions

    I'm also doing a 5 gallon, 1 plant DWC and want to know, if I don't have a ppm meter, should I add nutes to the topoff solution or just add pH'ed water? Also, H2O2, should I add it to the reservoir as a matter of course? Will it ever cause a problem?
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