cleaining

Hello dear community, I have recently purchased a used Red Sea Nano Max aquarium. Unfortunately, I am having difficulties cleaning the glass. (see photo) I can't get the stains on the top of the aquarium out. What I have already tried: Lemon with vinegar and salt And then water with baking...

I was just wondering if it would be possible to switch out my sand bed and replace it with new Aragonite? Every time I do a water change and siphon it clouds up the water in my tank and the sand has been looking extra dirty recently. Would this be a bad idea? Could it kill everything? Is there a...

Hello everyone Today I will pick up a used Red Sea Max Nano from a guy in my community. He just moved all fish and corals into his second (and bigger) tank. Now as the tank was running until yesterday it will come pretty "dirty". Now I wanted to ask you guys, how would you properly clean the...