Name the deficiency guys

[thegrower1]

Alright everyone hope you're enjoying lockdown.... Had a slight deficiency all the way through with these plants getting worse now in flower, on week 3. I'm thinking calcium but not 100% tbh. I'm using advance nutrients with RO water, apparently no extra calmag needed with advance nutrients but maybe they do need a boost in flower?

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[M_C]

You know everything about your grow... we know nothing... you need to tell us mate

[gardro]

Spider mites?

[BB]

Spider mites?

That was my first thought


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[Herbitual]

That's mites.

[thegrower1]

Sorry lads was being a bit lazy. It's a fully climate controlled room apart from co2 I just have a 10" fan with carbon filter on 25% just to keep smell down and replace stale air with fresh air.

The groom...
16 quantum boards
8 plants
4 pot DIY rdwc system x2 (8 pots in total) completely separate to each other with their own cooler.

I work off vpd so humidity is controlled by what ever temps are. I'm slowly increasing vpd each week to lower humidity now the lady's are flowering.

I keep room temps at 23oC lights off 28.5oC lights on. The room is air conditioned so I can have my temps whatever I like. I have room temps at 28.5oC then that gives me a leaf temperature of around 26oC (just about idea for led lights) thought I might add anyone that tells you a proper air conditioner is expensive to run obviously never used a proper one. I paid £500 for it brand new 12000 btu installed myself because it was a easy fit one. I use 2 smart air conditioner controllers one for heat one for cool. lights off I have it set to heat the room from 23oC and lights on its set to cool from 28.5oC same days it won't even cost 50p to run...

Water temps 18oC

Nutes...
Advance nutrients used in veg was just grow A&b

I also use TNC mycorrhydro

Flower nutes are... Advance nutrients bloom A&B, big bug, rhino skin and overdrive for last 2 weeks.

I've took some better pictures of the leaves I was taking them under the leds so you can't see the rust spots on the leaves. Definitely no mite but they have got a few thrips on them but these are definitely rust spots hopefully will be a little clearer now.



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[thegrower1]

Also forgot food levels. I use a ppm meter so if it drops I give them more if it rises I give them less simple really lol

Ph, I don't ph because with advance you don't use ph meter, but old time habits I do check sometimes and it's normally anything from 5.5 to 6

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[Herbitual]

It's still mites.

[Loki]

Spider mites 100%

[Herbitual]

But it's a much, MUCH bigger problem than I first thought.