My hydro is growing slower than my friend's soil

[Zandor]

Problem fixed. I am using bottled water now as well as having my suspected light leak fixed. I added a little h2o2 to be safe and they are doing great!

Just one thing about using bottled water or RQ water. Yes it's the best water for your plants.

Just remember the RO process removes some minerials that the plant needs. Use CalMag plus to put back what the RO process takes out. FYI