<span class="link_user">@Grow15</span>,You may be okay with the kelp one but contains organic material and the general rule is no organics in DWC. I cant tell you for sure sorry. Hydroguard is the best for your situation, if you can get it where you live. I live in Canada and cant get it here. Here is a user "growdiaries.com/grower/roberts" who is very skilled with DWC, I'm sure he would be kind enough to help you more.
<span class="link_user">@Thundrfuk</span>, So should I stop with the velokelp once I get the Hydroguard ? Velokelp is supposed to help with root development right ? What should i replace it with or does hydroguard already cover that ? Ty
