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Alkalinity or KH targets will vary based upon the fertilizer used. As a plant takes up ammonium ions, it secretes compensatory H+ ions...

I don’t know that there is an “ideal”, just the lower the better.

I was surprised to learn that the pH of applied solutions has very little impact on the rhizosphere pH. The medium, the plant, and the...

That first one is intended to be stuck down into moist soil to read a pH. I serioujsly doublt it'll be very good in orchid media. The...

Just a note to advise that this offer expires tomorrow (Thursday) night at midnight.

The ones I have used are 20” x 10” and polymer coated. I set them in a standard nursery tray with the plants in direct contact. They...

Yes, those inexpensive mats are quite nice for warmer growing plants in cooler/drier environments. Folks who grow warmer phals in...

I have used inexpensive low-wattage mats. They have no thermostat, but boost the root zone by about 10-15F above ambient.

I have no doubt they are greener and will grow faster, but I honestly doubt that’s sustainable if you feed biweekly or more frequently...

These days, all my applications are with a hose-end sprayer. I feed once a week. I add 1 tablespoon/gallon to that the first feeding...

As I replied to your post elsewhere… 12 years. Plants are doing great. FWIW, I have sold K-Lite to 2378 individuals and institutions...

Light levels, as basic as it may seem, is full of potential pitfalls. We get concerned about “what is sufficient,” for example, but...

The AOS guides are reasonably good for the peak, noon FC's plants can handle. For paphs, they say 1000-1500 fc. That would translate...

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So what’s the big deal? Urea is cheap. Put 1/2 teaspoon in a quart of water to make a 1000 ppm N solution. Add 12.8 ounces of that...