Great looking first grow, reminds me of exactly how I started out! Watch for ph swings when your plants starts to drink more especially during flower. In my experience it’s better to monitor it before you see a problem with your plant. If your ph drifts out of range then your plant can’t absorb nutrients so it will suck up large amounts of water while increasing the concentration in your reservoir and further throwing the ph out of range.
But I’m sure you’ll learn as you go, I don’t want to ruin all the fun for you! I ran dwc buckets with jacks(very similar to master blend) for years so I’m happy to help whenever you need.
And I’ll let you in on a little secret it took me years and some gallons of hydroguard to learn: ditch the hydroguard and get some Southern Ag Garden Friendly Fungicide. It’s the same thing except it’s 99% Bacillus amyloliquefaciens instead of 99% water and at half the price. Hydroguard is really one of the biggest ripoffs in a bottle.
https://www.amazon.com/dp/B00VXQG23O?ref_=cm_sw_r_apin_dp_BQEHRJ443Q9FNDDBV5E5
Good luck with your grow, I look forward to seeing how you do!