Indoor Multi-strain Madness!

Oct 17 - Everyone is bumping along nicely. Hash plant is definitely leader of the pack now working on its 3rd set of leaves! Temp has been dropping down to 17 Celsius during the 4 hours the lights are off from 12 to 4pm. I'm going to be turning my furnace on soon so hopefully that will be corrected. Humidity has been from 45 to 60 RH with the odd 70 spike for a short period after watering. I think I've been over watering anyway classic newb move and will be dialing back to encourage root exploration and expansion! I added in both lights now, the 300w Cob and the 600w blurple and they've made their way down to 10" above the seedlings. I havnt detected any issues there yet. Also have a 6" fan on low blowing in fresh air at the bottom and helping to strengthen the stems via a little wind on them. I've been feeding the hash plant with a pretty low dose of nutes and will add the other 3 into the feeding cycle this week. Oct 18 - Fed all plants with week 2 dose of nutrients. I think they are a little slow growing due to the temp dropping to 16 Celsius when the lights go out. Getting my furnace replaced on Monday so that should help its cold in here and the pots feel cool. An HPS light would've bee handy here lol