Looking for good general potting soil brand that drains well as a lot of ones I have tried are very heavy with mostly hard lumps of clay. OR it is  chunks of coconut husks off various sizes that water runs right through. I tried adding a lot of peat moss to the heavy clayish stuff I already have, but it is still nasty. And how come potting soil here is sold by weight instead of by volume? easy profit by having it wet? I have 6 30 x 30 x 26 pots so need  many liters. Thanks - sidenote has anyone had luck growing jalapenos with real heat. The local ones have none - suspect they are way over watered as chilis need some dry stress to build heat.

Order "Takumi Organic Super Soil" from Maruchu Busan. They have 25 kg sacks.  https://maruchubussan.co.th/

Mix with a high quality vermicompost from Best Garden State or other source. 

I also use  Maruchu Fish Amino Fertilizer. 

Kind of pricey stuff, but worth it.