Hey man, few things.. Firstly using synthetic nutes won't guarantee a better yield, it's all about the grower and whether or not the grow space is dialled in to reach it's full potential. Not saying it's your skills that are the problem btw just something worth noting.
I'm assuming you're growing the full organic route which to be fair baffles a lot of decent growers, myself included. I too want to keep things simple/stealthy and organic so I went for bottled organic nutes made by Plant Magic, it's a UK company with nutes specifically designed for water here in the UK - I mention this because for me it was the best option, all the convenience of bottled nutes but with the organic vibe very much intact. Anyone using tap water in the UK should be leaving it to sit for at least 24 hours anyway to allow the chlorine to ***k off.
I've done synthetic and organic grows bro and at the end of the day it comes down to quality over quantity for me, my synthetic weed, although greater in quantity (could be down to using hydro and not soil) took at least a month to cure, more like 2-3 months to reach its potential. Whereas my organic stuff is good to smoke and damn tasty from the moment it's dry, obviously a long cure will benefit any weed but not having to wait another 2-3 months before enjoying your fruits is awesome, just gets that little bit better each day.
I feel there's an argument out there that you can push organic yields as much as synthetic these days so stay open minded bro, over the next year or so I'm going to be testing a few different organic boosters so look out for that!
Sorry for the rant, this could all be completely irrelevant but I thought I'd give you an option!