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Thanks! I dont think im gonna risk it. Ive bought 3 lights from Alibaba/express, one QB from Kingbrite was good, one really cheap QB that was garbage, and a 240w probably lm281b which is ok. Both Mars Hydro and Spider Farmer have 150w lamps with 301b evos for $140,.

How can you tell?

Yeah, thats the question, if they are real Samsung diodes. No way to tell for sure as far as i know...?

Hiya I came across this, im tempted to order one, what do you think? https://www.alibaba.com/product-detail/5-Channel-240w-Led-Board-LM301H_1601254786819.html?spm=a2700.galleryofferlist.p_offer.d_title.56c013a0hM8e8s&s=p&selectedCarrierCode=SEMI_MANAGED_STANDARD@@STANDARD Cheers!! Neil

Brilliant thanks just what I wanted to know. I have 2 QBs one with 301b the other with LM281s, the 301 is much better than the LM281 but I just wondered if the Evo is worth it. Found a good deal on Alibaba for QBs with 301and a decent amount of 660s

Hiya Apologies in advance, i havent done a huge amount of research on this, there is a thread on here but it is extremely technical and way over my head. From what ive learned, the Evos are slightly more efficient which will affect energy consumption and costs, but if it actually produced better...

Cheers bro

Hello This is a FB Strawberry Banana auto day 90. The lower buds definitely arent ready but these uppermost ones i think are done, would you agree? Thanks!!

I have a 0.5L coke bottle i put about 10ml of the pH up/down and fill it up and use that to adjust my DWC bucket. Neat, pH up/down is way too strong. Its much easier to work with if you dilute it down. But you need a pH pen, its an essential bit of kit.

Cheers i just looked up that stuff and cant get it over here (EU). Been applying and flushing netpot and roots with neem oil today fingers crossed that gets rid of the little fuckers

Hi guys As per title :evil: Im deep into flower which makes it a bit awkward, ive had them before and treated the base of the plant/rootball with neem oil then flushed through with water from the shower head but i dont think ill be able to do that due to the size of my girls. Can i just make a...

Ummm...haha you ain't gonna like this, I don't know what scale, it's whatever my Milwaukee probe is set at. And in some ways it doesn't really matter, if the reading (whatever scale it is) goes up, then the plants not feeding and it needs to be lowered; if it goes up she is feeding and it can be...

Thanks yeah i lowered it to 750 these issues started when i was putting her over 800. If it goes up again ill drop it further.

Hey doods thanks so much for the help - probably my 8th grow but still keep having issues!! Ok so noone things its Mg deficiency. Overnight ppm went from 850 to 900 so i guess nute burn is also a possibility. Ph also went up from 6.3 to 6.7. I have 3 of the same strain they all seemed happy...

Raised the lights and dimmed them but seems to be getting worse. Yellow tips everywhere :(

Light is about 35cm from canopy no i dont have the ppfd app is it any good?

Ok cheers Dan my MW driver is adjustable so I'll reduce it see how she does cheers

Its definitely on the upper parts of the plant. IR thermometer reads about 74° at canopy, is that enough to cause light burn? That part in the picture is about 40cm from the light.

Hiya, This is a FastBuds strawberry banana auto under an enhanced spectrum QB288 in DWC. PPM is about 700 and ph 6 - 6.5. Very obvious yellowing of leaf tips, to em it looks like Mag deficiency, do you agree? Ive been feeding her epsom salts but perhaps i need to give her more? Any thoughts...

Cheers man. Had lockout issues before but AFAIK that mostly comes from over feeding my ppm has been dropping steadily which suggests i havent been overfeeding her. Tempted to dump a high dose of calmag in the rez and see how she responds...