60 Day Lemon/THC Bomb Auto in Coco/Perlite CFL

Hi there!
This would be my first proper grow as my first was ruined when I left someone else to take care of it for a while. I used DWC before but now I switched to coco/perlite and it is definitely easier and has no problems (I was getting root rot with DWC). The seeds are 2x60 Day Lemon DNA Genetics and 2xTHC Bomb Auto. One of the bombs did not sprout so now I am left with three plants. The grow area is 70x70 cm and lights at the moment are 3x45W 6400K CFL. I have two more 45W CFLs but 2700K which are off for now. I will definitely get more lights as they grow bigger. The pots are 7.5L round pots and I use Canna Coco A+B and I have Cannazyme. I germinated in rockwool then planted in party cups with coco/perlite mix. It has been 16 days since I planted the seeds in the rockwool and just today I transferred them into the big pots. Around a week ago I gave them their first feed of 475ppm now when I transplanted I upped it to ~645ppm. pH is usually 5.6-5.8;
Here are a few pictures since the beginning, please feel free to correct me if I am doing anything wrong all advices are welcome.
The Lemons are the two tall ones:

The big Lemon:

lemon and thc bomb

Transplanted:

The plants today:
Lemon 1

Lemon 2

THC Bomb

A few more pics from the past days. One of the lemons might look a bit yellowish in the photos but that is because i have one 2700k light bulb on as well.

A few more pics from today:

Third picture is the THC Bomb Auto;

Guys I have a problem... yesterday I noticed the leaves were curling up a bit at the ends and it looked like heat stress. It actually was pretty hot in there as I added another 2x30W 6400K CFL's. Temps were 32-33 degrees C. This I think I managed as I raised the lights a bit and had some more fresh air coming so temps are around 24 degrees. Now the big problem - yesterday I watered, solution was ~740ppm. I gave the big lemon 2L of water but then I saw runoff was quite a bit so I gave the others 1.5L. Today the two lemons have their leaves dropping (especially the big one) and they don't look as lively as they did 2 days ago... Also as you can see from the photos there is some yellowing(yellow spots) on the leaves... Do you think I overwatered them and if I did should I act in some way? And is it possible I am overfeeding? Please help!
Photos:
the big lemon:

2 hours later same big lemon:

The other lemon, also looking sad:

The bomb looks a bit better I think:

So what can I do to help my plants...?

Anyone? Also I have some kind of green moss thingy on the perlite in the pot of the small lemon. What should I do with that

Alright they have gone back up, I guess it was overwatering. Problem is that the yellow spots are not going away in fact they seem more. Do you think it could be magnesium deficiency?

its certainly a chlorosis of some kind; but whether it's a deficiency or a lockout, that's hard for me to know. Seems like your pH is a tiny bit high for hydro, but I don't do hydro, so don't listen to me on that. bump for a stranger? hydro/coco guys?
be easy, best of luck,

Thank you for the reply! I would not be surprised if the pH is too high as I read that this green moss can affect it and to be fair this only happened to the plant where the moss was. The other are looking fine now, even the one with the yellow spots is doing well as new growth does not seem to be affected. I have another question. As I am running CFL's I think my plants could use more light. At the moment there are 3x45W 6400K, 1x45W 2700K, 2x30W 6400K CFL's. That totals at around 15,200 lumens and space is around 4 square ft. I am thinking of getting a 400W HPS light bulb which would be outputting 50,000 lumens. Do you think the yield would increase noticeably?

A few more picture from the past days. Last ones are from today. The plants have been developing but are not too tall and it has been 30 days since i planted them. That means around 26 days since sprout.... In the last pictures you can see the set-up. Again do you think a 400W hps light bulb with a magnetic ballast would improve growth and yield? I have to buy more 2700K CFL's either way. An HPS would cost me twice as much but then again would output 3-4 times more lumens... Is heat really that bad? My temps are currently going around 25-6 degrees C but there are 6 CFL's under a hood only 3-4" above the plants.

Get that HPS light

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Faster growth

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Alright, after some consideration I bought a 400W HPS light with a magnetic ballast. Hopefully this will improve growth and yield... Only concern is if I will manage the heat but I will see when I install it tomorrow or the day after tomorrow.

It has been a while since I last updated. I have been running the 400W HPS for four days now. The plants are flowering, the biggest one is 36cm, others are around 30. I can see quite a few bud forming. There is some yellowing on the leaves, the plants were also dropping a bit (The days after watering generally they look a bit droppy but they recover fasts). I water them with 1.5L of 700-750ppm solution. The HPS is 40-45cm away from the plants and the heat seems to be alright. There are a few pictures from the past weeks:

The lemons are the two plants at the back. Since I planted them around 42-3 ago I'd like to think they would be ready in 30 days but I can only hope...

An update of the situation. Giving them now 30ml/10l of coco A and coco B plus 25ml/10l of cannazyme. On next watering (I guess saturday) I will add PK13/14 to the mix. Do you think it is good time to do that? I really hope the lemons are done by the 15th of april but their buds are still quite small:

I doubt they will be done by April 15th, unless they pick up the pace significantly.
It could possibly be done in ~6 weeks(+/- 1 week)

Looks like it's just getting started really + I'd hate for you to waste a large amount of time to end up with disappointing smoke.

Yeah indeed they are slow... I definitely won't rush them and would give them their time if they need it. I think I might have underfed them a bit as I saw a few grows where leaves were quite a bit darker(my solution used to be ~750ppm now is higher). Also maybe the CFLs in the beginning were not powerful enough. A few days ago they went a bit dry( I did not expect them to be so thirsty) but are back on track now.

Man your 60 day lemon looks way better than mine in the same time period...

Thanks lowryderlove, I saw you had some problems with yours hopefully all is fine now.
An update to my situation. Buds are growing and so are the plants to be fair. The bomb is now almost as tall as the big lemon ~67cm. I am definitely happy with the amount of buds at the moment plants do seem quite huge. I was thinking if I should switch their light cycle to 12/12 maybe they will mature faster? After all DNA genetics has advised to use a 12/12 light cycle. I used to keep it at 19/5, now i switched to 18/6 just out of curiosity. I have been feeding them 30ml Coco A + 30ml Coco B + 25ml Cannazyme + 10-15ml PK 13/14 (past week) per 10 litres.
Here are pics:

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