“I use this periodically when the sun is low and just catches the tank to cause green water. It works really well.”
“Very easy to change and keeps my Biorb in tip-top condition.”
“Quick delivery, well packaged. Recommend and would use this retailer again. Thank you”
“Efficient and well priced.”
“Actually works, cleared my 105l tank of 'green' water!!”
“I would just like to recieve them... over a week in this day and age crazy”
