emergency help

Hello. I have no idea why my favia frags won’t grow. I’ve had my tank for about 7 months and here are my current parameters: Ammonia: 0 ppm Calcium : 430 ppm Nitrate: 2 ppm Nitrite: 0 ppm pH: 8.0 pH Phosphate: .50 ppm Salinity: 1.025 SG I haven’t tried testing alkalinity or magnesium yet. Would...

Hi people of R2R. I got a used leaking 300-gallon deep dimension from a guy on my local Facebook marketplace. I knew that tank was leaking when I got it, so I paid 425 dollars to have the tank professionally resealed. I filled the tank up a week after getting it resealed, and it did hold water...

I did a water change like normal yesterday and the torch got hit with a lot of water(i thought i hit the rock above it as a buffer) now one head is damaged. Do you think the other head will be ok and is there any chance at all the damaged head will recover? And my scans looked fine yesterday and...