Post ka pics para mas madali mag advice..
T5 normal output ba or t5 high output? Yung 30gallons mo anu yung height niya?
Yung 4th day mo ba , 4th day ng newly assembled tank or 4th day ng after cycle?
Regular water change lang naman to maintain a reef tank. Sakin i do 15% twice a month. Thats all no direct feeding sa corals just provide the right lighting they need. And i have a refugium. Chaeto and some caulerpa to export nutrients and to house copepods. Skimmer and filtersocks din mas ok meron ka. If wala ok lang din naman basta secret in maintaing is waterchange, saktong bio load, saktong feeding ng isda at temperature ng tank and proper lighting.