Strange pink mold growing in coco/perlite

CBS2020

Active Member
This is now fixed but wanted some thoughts on what it was,

Photos from clone btw

The area has two stages of flowers, one at around week 6-7, and the other around 5-6 both fed from different Res.
pH is kept between 5.9 to 6.1, Ec runoff got a bit high, around 250-500 of input (1500Ec), RH at 60-65%, Temp at 75F / 24C.
I usually keep it between 50 to 200.

I noticed from the week 6-7 pots (coco/perlite) that there was heavy salt on the outside of the pot but also on the top of the coco. few days later the top of the media started getting furry so now i knew it wasnt just salts.

I used Zerotol on the media and Hypochlorous acid (alternating days). Only 2 pots had this much mold? (shown in pic), others none to minimal. Few days of the H202 and HOCL treatment and some of the white stuff went pink. A week of treatment and now its all gone.

As a comparison the other 5-6 week plants (same media, same area) but different res has 0 salt build up on pots and media perfect colour.

Only thing i did prior to this occurring was a flush (with lower Ec water) on the later week 6-7 flowers batch as Ec runoff was too high (above 200).

Any ideas on what caused it? The buds and plant remained in perfect health (see bud pic).

Side note, one plant strain has currently some strange patterns on their leaves (i know late flower its fine to have leaves go golden) but this is a unique pattern compared to the rest. both are from the same plant, upper growth since they are lollipoped, smaller leaf is a bud leaf and the larger one a fan lead. It gets fed the same... Is it Zinc, Sulphur ? Do i need to care if this happens to only 1 in late flower or is it a sign i should add some zinc / sulphur or what ever is missing to improve the yield.

Thanks again.
 

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CBS2020

Active Member
If anyone else gets this mold then i the HOCL and H202 did the job. I think the res got contaminated with something and i also put some HOCL in the res as well as direct flushing in the media.
 
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