This week I learned my lights were not going off. At all. I though I was running 18-6 but due to a timer (user error) issue, they were still on 24 hours a day. This was discovered midweek and remedied to three days of 18-6. Plant showed noticeable new growth with rest. Started feeding open sesame in preparation of flowering nexrt week. Light was replaced from Vivosun and have 4 working T5 bulbs again.
@Psilocubensis, I'm not sure the mm size I used, but they are relatively small. The water flows with very little resistance, more than a drip but doesn't just flood out instantly.