No emilya, it's not extremely bad advice. It's how I've dealt with acidic soils for close to 30 years, and it has worked every time. Never killed a plant yet.
Get back on your regular 12/12 schedule and you should have no ill effects.
I've never heard of a 6/18 light schedule in bloom, and I wouldn't try it. I always go to 11/13 for the final two weeks of bloom to boost resin production, maybe try that. But 6 hours is way too little in my opinion.
Lime and/or worm castings will both buffer your pH somewhere close to the 6.5 - 7.0 range. If all you can get is pelletized lime, just use a rolling pin or something similar to grind it into a powder. Apply water to see the beneficial changes. If you start with your medium in the right pH range...
It's just a very humid environment which has traditionally been a very successful way to germinate seeds. The trouble with it is that at times, a heat mat needs to be used and the heat mat has a tendency to dry out the paper towel and kill the seed if you forget to check on it for too long.
Who's jumping all over who? Who's being argumentative now??? Sheesh. I simply asked why you feed nutes to a plant after flushing it. Bad day? That last post of yours was rude as fuck and didn't need to happen.:confused:
It all depends on what nutes, if any, are in use. Flushing often is not necessary at all. I personally wouldn't feed nutes to a plant that's been flushed and is going to be chopped in a few days. You're assuming salt based nutes are being used here and I don't see where that was ever stated.
Properly asking for grow support is a lost art here. Now everyone posts a couple of pics and expect the rest of us to do all the work without knowing shit about the grow.