Basement Blueberry

Week 2 went smoothly, everything is holding a good range. My VPD has been 1- 1.1 all week. P1 is showing a 3rd node already P2+3 are 1 day behind and P4 about 2 days behind those 2. They got their first real watering with the can end of this week. I probably could have used this sooner but I am trying to avoid over watering at this small of stage. The coco blend is drying up every day at this point, as the watering gets heavier watering will most likely go to every other day. I did notice a few of those little flying bastards(gnats) crawling around on the top of the coco. I did a neem oil top soil only spray 1oz neem 11 oz water. Used 6oz 1st application I will reapply remaining in 3 days. I will be headed to the grow shop this weekend for sticky traps, I want to monitor the population and make sure to keep this under control. The water res. got an upgrade, the water temp was a bit low. I tried a plant riser I had 1st to see if getting it up the concrete floor would help. But I ended up getting a 50w fish tank rod heater. This should have no issue keeping my 5 gal water res. Around 68-72. I am hoping the warmer water will promote more growth. Thanks for all the week 1 support from everyone, any thoughts, advice, maybe things I consider adjusting. Being a newer grower I want to learn as much as I can.