Both Plants ended up getting a bit of nute burn :(. Phantom cookies has been a tough first grow, she has been very temperamental and so far not very rewarding for it. The other I am pretty pleased with, just wish I had not had the burn. I invested in a better light as well to double the LUX, it was around 20-30k which didnt feel like enough for bloom.
I flushed both plants till around 400 TDS, then added root support and silicone nutes only for a few days then will check up on them.
Gotta start some where, i'm trying myself, a lot of adaptations as you go along its a little hard to see your plants with the lights on are those hoses coming off some kind of drip feed? Anyway until you get your 900w in maybe you'd consider going 24hr lights to increase the DLI (daily light intake) of what you have and ya it might be time for a tent, They look good to me if and when something bad happens just take a deep breath, remain calm, you'll figure it out. Start planning how you'd set up exhaust and intake, and control the outside room climate if you dont already, these are by far the biggest challenges ive come across especially in the humid summer. and plenty of fans.
https://www.acinfinity.com/blog/how-to-calculate-required-cfm-for-a-grow-tent/
This can help you plan what size exhaust fans, intake fans you might need, no need to by that brand though glhf look forward to seeing your progress
-Astral