First little grow

So the plants have been under the new bulb for few days. Apologies for the photos, they just don't look great with the yellow light. Anyway, I have been busy each day trying my best to get the plants tied down and trained. The growth rate has exploded. The canopy is really full, though quite a lot of the now full screen are big leaves. I have seen many different opinions on whether to cut leaves. There are some monster sugar leaves. The result of my training has been semi successful. I don't like where a number of the 4 main colas have ended up - at the edges of the box. However I can see that there are now a lot of side shoots coming out where I have a branch almost level on the screen, and lots of light can hit the node on the stem. I am assuming these will become bud sites. I have begun to feed them too. I started to give 3ml Plagron alga bloom each in their 1l of water which they are currently getting daily. 29 June Some of the new growth looks a bit off. Very light green on the leaves, except for where the veins are. I am used to the new growth starting out light green but quickly gets darker as the leaves start to grow. I had the new 400W bulb a bit too close perhaps. About 6inches 15cm from the plants. It's in a cool-tube and is not hot at that distance, so I thought the more light the better. Hmmmm. ... 30 June Looking up the leaves off-colour issue has not given me a definite answer. Could be a- light burn, zinc deficiency or not enough magnesium. Will post a picture with q. July 1st Decided to give the girls a trim below the canopy. Removed a good few leaves and all the small sprouting stems which would never have made the canopy. About a dinner-plate full removed (Very scientific !!) I will give it another day I think before trimming off some of the leaves. I noticed today that I had turned off the 6" internal fan and when I checked them this evening after the light had come on that there were wet patches where there were two leaves tight together. That would probably be a great starting point for mould to start - something which I need to keep an eye on as the humidity seems to be a bit too high. 60-65%. I may need to install a bathroom type extractor to vent air out of the shed. Luckily I have one as had purchaced last year when I was initially going to grow. After I did my research though I realised it would be a bit too light for what I was going to set up. Ok thanks for the advice. Be surprised if it's nutrient lockout. Growing in soil and have been feeding under the recommended max nutes. Plagron growmix soil, with Plagron alga bloom. However having the light too close and watering on the lite side could have made the girls drink more than usual right, so would be eating more fertiliser as a result. Currently giving them 1l of water a day, and they ate in 15l grow pouches hmmm. Yes the humidity is a bit high. The outside air Rh is running at 75% this evening. Not sure if I can do much about it as the system is not closed, but I have turned up the extractor some more. The fan is meant to shift 400m3 of air per hour, and am running it about 30%, so for the size space I am exchanging about 400 times per hour - thats roughly estimated. Is this enough. I don't have any Iron specifically, but I do have some Iron fertiliser I use in a planted aquarium, I wonder if it is worth throwing some into my next water more hmmmmmssss. The agonies of the newby. ...😌