I was behind the back fence this morning checking the ground boxes with my meter for water content. While I was back there I noticed that the tomato plants were nice and healthy with their main stem being quite larger than the tomato stems in the deck containers. Now why could that be I said to "I". Then the thought occurred to me that I had put mushroom compost in the bottom of that ground box. Could be that compost contains nutrients the tomatoes in the deck containers are not getting. I can not put compost in the deck containers or pails as it contains to many small sediments that would bind up the potting mix. Then I got thinking and thought maybe I could take the compost and put it into a bag that would not rot with fine enough mesh that the sediment would not pass through it and just set it on top of the deck containers and pails. Then when it rains or I water the containers or pails the the water will pass through the compost bag taking nutrients with it to feed the plants.

I was also checking into this the past week https://www.homedepot.com/p/AgraLife-Megamend-22-lb-Organic-Micronutrients-and-Trace-Minerals-Fertilizer-for-Plants-and-Lawn-MEGA22G/204414420

Been working on figuring out my ferlizer needs for next year.