clean glass

I have a Tunze Care Magnet Strong 0222.020 for sale. In my opinion these are the best magnet cleaners in the game. I recently upgraded tanks and upgraded to the Strong+ model that's why I am selling. Magnet is in great condition and comes with all the original hardware. Asking $40 shipped...

What’s an easy way to get this semi caked on algae off the glass? I’ve been slacking on taking the magnet to the tank. Any suggestions to get this cleaned and looking better. Obviously don’t want to scratch the tank

We’ve upgraded! We went from a 15 gallon and just bought a used WaterBox 90.3 and it has as little bit of build up on the glass, the sump box has a lot more! I wanted to use citric acid, but because it’s so big and heavy, I don’t know how I can rinse it properly so it won’t affect the tank once...