I have a problem with scrubber, I have it set since march but it does not grow it looks like it shows in the pictures. On one side I have a saving light bulb of 20W and on the other side two led of 10w..eight red ones and a blue one for growth. I think my problem is because I did not scrape the mesh right. In my fish tank I have alga on the glass and on some rocks. I will appreciate your comments.