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Heat! Problems An increase in heat to high levels or a sudden "shock" of a severely hot day can trigger leaf yellowing and drop.  Many times the leaves will drop very quickly with only slight yellowing. This "yellowing of leaves" is a simple survival reaction by the plant that allows it to conserve moisture.  Wilting and scorching can also present itself as further effects of intense heat. For indoor grows, this is commonly from placement or growth too near...

Cellmax has been a Dutch manufacturer of plant nutrients and substrates since 1996. This means that we have been making plant nutrients and substrates for over 15 years, something that we are proud of! Our products are manufactured under stringent requirements to guarantee the quality that Cellmax has been known for since 1996. Cellmax’s mission is to help growers around the world increase their crop yields through a simple, high-quality line of products. Our vision is to make society a better...