Hello everyone, I have a few questions and concerns.

I have a 30x20x20 cm aquarium that's been in operation for two years. It's full of soft corals like GSP, mushroom, and zoa. Three days ago, I added two more SPS corals: Red Montipora Cap and another species, I'm not sure which, but they were sourced in Vietnam. I use a K7 mini light from 9 AM to 7 PM, and the tank temperature fluctuates between 27-30°C. Recently, I've noticed that some of my Red Montipora Cap have a slightly white area, but that spot still has polyps and is growing evenly. Does anyone know the reason?

And should I increase the UV light from 15%-20% between 12 PM and 4 PM?

Thank you everyone.

This Pico Tank is almost 10 months old 😁

Hello everyone!

I am interested in this type of coral, I have researched and they are called Doughnut but I don't know if that is true. I heard that they absorb a lot of nutrients, I don't know if that is true. Please give me some advice. Thanks everyone (this photo is from the seller, I borrowed it from them)

White light and blue light 😄

Wish everyone a very happy weekend 😄

Hi everyone, this is my tank which is 30x20x20 (excluding the water filtration system area, it is 20x20x20) and has 1 mini Blue Tang, 1 Mini clownfish and 1 cleaner shrimp. I am currently looking to clean my sand bed. Do you have any suggestions on how to clean the sand bed, using any method or using any creatures? Thank you very much everyone.