T5 bulbs are 4 months old. I feed the system 3/4 tsp Coral Frenzy, 5ml Phyto, and 9ml each RedSea Energy A&B daily. Along with 1/2 cube frozen Marine Delight.Also how often do you change your bulbs? What about nutrients? After you feeding them amino?
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Perhaps I need to change to bulbs with a higher "K" rating?