very nice opinion. iwould like to know more because everybody in this forum talks about flushing.
this is my first indore grow so i`m new to this.
i have use 3 fert in this grow 202020 for veg 153015 MG first weeks of flowering and 10-55-6 the other weeks.
the nuts aren`t organics they all look like miracle grow but other brand. one of them is greenlight .
this deserves it's own thread, but unfortunately, would be clouded with hate and retaliation. i'll expound, then drop it...
Residual tastes are something that do occur, but are not widely understood. these tastes are the result of buildups of water solubles that the plant is able to take up, but is not able to use. a good example is how cut flowers can draw food coloring, changing the color of the flower.
when feeding plants, you must understand that feeding anything other than what the plants are going to use to create plant matter will create residual flavors. ie, apple juice, molasses, various soil amendments... all of these leave something in the plant that is not used for production, but rather in water retention. when you harvest and dry the plants, the water evaporates, and the residual deposits are left. this is why potent generic fertilizers like greenlight and miracle gro are known to leave a bad taste when not flushed out of the soil for a week or longer. by using a formula made up of only plant nutrients and micros specifically formulated for cannabis, you eliminate taste issues.
20-20-20 is a good generic all purpose fertilizer. however, pot will use more of a 3-2-1 ratio in the veg phase. so, a 15-10-5 would be ideal, and a 20-20-20 would be high in phosphorous and potassium. this will eventually lead to salt buildup, as these nutrients are being absorbed in less quantity than nitrogen.
in flower, pot likes a 1-2-3 ratio (most people don't know this). a 15-30-15 is not a good ratio at all, and leaves a load of phosphorous in the medium, which usually causes a toxicity by harvest. toxicity = bad flavor, you're not going to flush that out
.
so, if you want to feed until harvest and never worry about flushing OR flavors, start using a specifically designed cannabis feeding formula.
3 part nutes are great, and allow for moderate tweaking to individual strains
Cal/mag, something that most 3 part micro formulas don't have enough of in relation to nitrogen
decent pk booster to get that 1-2-3 ratio closer to perfect
hope this helps!