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Generally, I don't use rockwool cubes in S/H culture. The only necessity for it I've seen is when your RH os so low that it dries out...

Phrags can really benefit from pure water, maybe more than most other orchids, but they all do. It was likely the sodium chloride in...

Welcome, Nevin.

It’s derived from mass calculations, an estimated bulk density for powders, and a conversion from the metric to teaspoons/gallon

You can grow any orchid anywhere, if you control the environment. I met a guy in Delaware (Dr. Rah?) who was into cold-growing species...

Yep, it's all about resources, created and stored at rates that give the plant "confidence" that it can continue - i.e., great culture...

My Sorcerer's Apprentice, a division of Hadley Cash's plant, has been in semi-hydroponics for nearly 20 years. It can be monstrous, but...

Until Easter Sunday at midnight, buy two bottles of Kelpak, use the coupon code "GOSPRING" and one will be reduced by a third of the...

Tyrone, I really have to “wonder out loud” about the “suddenly dumping” part. Adsorption doesn’t work that way. In that process...

That is exactly how some larger-scale growers I’ve talked to used it- a small amount to provide a longer-term “baseline feed”, with...

The high EC of that particular charcoal maybe a surprise, but that doesn’t mean they’re all like that. A few decades ago I did some...

I just searched members for hyyui87, and the member does not exist.

Assuming you have started by mixing it with fairly pure water, it will remain stable pretty much indefinitely, stored at room temp.

That business about fertilizer burn is an indication of improper choice and/or improper use of any such product. They’re all just...

Nice!