Wizzlebiz
Well-Known Member
I need some clarification of your statement. Are you stating you only have to water once every 10 days?I have not experienced my plants uptaking salts immediately. Recently, when I gave nutes on a 5-day schedule (trying to kill a larve in the soil with H2O2), I got 500 EC units (microS/cm) of buildup requiring more frequent flushes. If I waited 10 days between nutes (no dryness wilt yet occurring), there is little runoff EC buildup (over EC in). I believe this salt buildup is related to overwatering wilt.
The entire potting mix is sort of a sponge, it's essentially made of many tiny pockets holding nutrient solution. So, if I haven't had a complete drying cycle and I irrigate again w/nutes (5-days), then I'm flushing some old nutes out to be displaced by new nutes, and the EC goes up over EC in (if I keep doing this, the plant may get salt or overwatering wilt). But if I wait longer before irrigating (recently, 10 days), then the plant has uptaken more of the salts judging by reduced salt buildup measured by runoff EC.
Outside of that salts cake up as they dry. Running water through dried salts doesn't immediately dissolve them. On top of that we have got to recognize there is no possible way it is flushing the same amount as what you are putting in.