Hey Y’all!! Got a couple ladies here that are at day 50 from sprout
Medium is Soil FFHF
240W Meijui QB LED
Been having issues with one showing “browning” or “copper” leaves. I decided to flush both on 9/21 and have only watered them yesterday, 9/25.
Have you checked run off ppms and EC I had the same issue my first cycle indoor had a really hard time flushing the FF salts out of coco I didn’t have sledgehammer I managed to get them to pull through though but I had spent hours flushing 3 plants It took me way more than 3X the pot to get it flushed in coco… root ball was so dense in the fabric pot that it was holding onto the salts it was a pain
I didn’t get the lock out til week 7 ish and it went downhill fast
What should I be looking for in ppm and ec? I actually have never checked that. When I flushed my plants I just watched the pH. I was putting in 6.6pH and kept flushing until i got 5.9 out. I haven’t done much research on the matter.
Now that I use dry amendments the only time I check ppm is when I think it’s getting close feed time, if it’s low then I know I need to amend. Growing with liquid nutes like FF you need to follow the the nute schedule they provide at first and adjust to the pheno your growing so we test Ppms going in and out to see if they need more or less nutes and EC (electrical current) is to check the salinity if the soil meaning the salt content, in fox farms schedule I think they call for a flush every 3 weeks and they recommend to use sledgehammer it helps dissolve the salts and get them out not necessary but not using it takes extra water depending on how high the EC is
I think in his journal he mentioned using FF trio and that’s why my assumption is he’s having a salt build up issue or something of that madder… when I did it and had the lock out the first thing that showed up was calcium def kept feeding cal mag just got worse came down to my flushes weren’t pulling all of the salts out just wasn’t flushing thoroughly enough, which in turn locked out calcium magnesium then P and K and so on
One plant is showing N and Ca defs IMO and OP should be supplementing by now with HF. Taking a runoff TDS will give you a good idea whether to feed or flush. Also: follow the FF grow schedule as there are recommended intervals with a flush using Sledgehammer.
And to confirm; yes I am using FF trio. I just finished week 7 from sprout and start week 8 today. This is an autoflower with 68-78 day from seed to harvest according to breeder. Today marks day 52 from seed.
Anyway. I have flushed, but not checked ppm. I plan on feeding tonight with 1/4 the dose for FF trio and monitor the ppm/ec going in and out.
I’ve also been using cal mag since week 4. Started nutes at week 4 also. I was using 1/2 dosage for all feedings except first was 1/4 dosage.
I’m just trying to keep these gals afloat for the last few weeks.
CalMag 5mL per gal
do as these guys have suggested though and check runoff. you may be close enough to finish but mind as well try and figure out what’s going on and try and fix it if you can. they bulk up and do lots of good stuff towards the end and better to finish strong.