Just go through your normal watering routine. Same type of water you normally use but water until you're able to get about 2oz or so out of the bottom of the pot (that's what I use as measurement) and stick a ph pen in there.

I would just add a decent amount of perlite to your soil (20-30%) makes flushing your soil easier when you have to. Also means you get to use less MG soil :thumbsup:

let us know your soil runoff ph.
daihashi Reviewed by daihashi on . Problem with new growth I have a problem with the new growth on my plants. The tips of the new growth are turning yellow almost white. They are in the fourth week. Planted in MG Organic Choice (I know I know). 400 W about 15 inches up from tops. I have used 1tsp. of Epson salts/1 gallon water twice. No change in the last few days. Seems that they have slowed in growing as well. I haven't fed them any nutes as of yet. I do use well water, could that be harming them? The PPM could be high. I have searched but seem Rating: 5