I just bought crushed granite Poultry Grit from Tractor Supply out here. The brand is MannaPro. I sifted it through a window screen and hardly got any fines. I brought a sample into the house and rinsed it. It was not very dirty at all. Makes me think it has been washed already. It is drying in the ...

You're welcome.

You don't even need to use that much pumice and water. I use a 200 ml plastic beaker. I fill 1/3 full with solid and add water to about 1/4" from the top. KCl solution, add about 5% by volume. Not much is needed. If you go with what you first said, just add a half ounce of KCl. Stir. If you do ...

Double wall insulates better. I was just reading about this last night. I want to build something in my own backyard. I do not own a greenhouse yet. I live near large numbers of commercial greenhouses and know one that owns one and one that was the Chief Grower at another. The owners greenhouse is h...

Steve, what's the big deal about testing your media pH? It might take all of 30 minutes, or you could wait overnight. Its the pumice I wonder about. Here's the problem -- the Milwaukee Instruments pH 600's electrode is ruined in distilled water (says so right in the instructions), so I'd be taking ...

Steve, what's the big deal about testing your media pH? It might take all of 30 minutes, or you could wait overnight. Its the pumice I wonder about. Yes, I expect the granite to be neutral. Your analysis for the granite is not for what is soluble/available, it is an actual analysis of the rock after...

''Particularly interesting is how media pH can be affected by the form of the nitrogen in a fertilizer, but only when it is used by the plants. Not quite. If you apply N as ammonium (a cation +) it gets converted to nitrate (an anion - ) which is not held by soil colloids (which are mostly negative...

How to test the pH of a particulate sample (ie potting soil, sand, pumice, decomposed granite, poultry grit, peat moss, coir, etc. etc. etc.) Rather than taking Wikipedia's word for it, I'll test the pH of my pumice and gravel mix. Your testing instructions are straightforward, I have a plastic non...

I was searching fertilizer information today and came across this series of articles starting in 2008 published in Greenhouse Grower, a trade magazine for the horticultural industry. The series is called Understanding Plant Nutrition and ended up being 22 topics long and covers a lot of ground. Some...

How to test the pH of a particulate sample (ie potting soil, sand, pumice, decomposed granite, poultry grit, peat moss, coir, etc. etc. etc.) Place about an inch or so of your sample in a clean glass or plastic non reactive container. Fill with rain water, RO water, Distilled water to over an inch a...

Jerry I do use a cable release, but with digital they are usually electronic so don't plug into the shutter button but into the electronics at the side. Also the makers own are expensive, but often cheaper "Chinese" versions are available on EBAY. However I looked up your Canon on the web...

1. Test the pH of my tap water and write down the number -- this gives me a baseline. You should test a container of tap water right after filling and then a few days later. There could easily be a change. 2. Make a gallon of watering solution diluted with 1/2 tsp. Dyna-Gro 7-7-7, 5 fluid ounces Po...

Are there any chemists in the house? Reason I ask is that I'd like to know what happens when the acetic acid in vinegar reacts to the Calcium bicarbonate in my tap water. I couldn't find a direct answer online, but this might get us close... From Socratic Q&A: What are the products when calcium...

Dave, I'm old school too. I am using my tripod I bought back in the late 1960's. Still works fine. I have to learn the manual settings and how to vary the f stops. I had a Honeywell Pentax Spotmatic 35 mm with extension tubes and all sorts of other stuff. I think the most important part for me will ...

I thought you bought one of those pH pens from what you posted on a post somewhere on this site. I read them and don't always remember where they are!!