Putting rocks in the bottom doesn’t accomplish what you think - it actually raises or perches the water table up to a higher level…
To determine the ph value of your soil - a slurry test with distilled water is needed…. testing runoff ph or ppm‘s will not tell you anything beneficial. Here’s what happens often…. a new grower runs into a plant problem and reads about checking runoff. So they check runoff and immediately begin tinkering with their feed water ph trying to get a different number in runoff… it’s called chasing ph and it’s a fast way to hit the wall. You will never feed or water your way to changing soil ph.
Same for silly soil probe ph testers…. very inaccurate indeed (yup I bought one too) but now keep mine by the grill for roasting hotdogs & marshmallows
To determine the ph value of your soil - a slurry test with distilled water is needed…. testing runoff ph or ppm‘s will not tell you anything beneficial. Here’s what happens often…. a new grower runs into a plant problem and reads about checking runoff. So they check runoff and immediately begin tinkering with their feed water ph trying to get a different number in runoff… it’s called chasing ph and it’s a fast way to hit the wall. You will never feed or water your way to changing soil ph.
Same for silly soil probe ph testers…. very inaccurate indeed (yup I bought one too) but now keep mine by the grill for roasting hotdogs & marshmallows