bro, sulphur bead will take a while to keep in. Once it is in, you just have to adjust your flow slowly to confirm your NO is being reduced.....want to try again...hehehe....missed your sales on the sulphur bead, if not can pass back to you....kekeke.....
for algae scrubber, iwarna selling pre-fixed type....you bought it or diy yourself...if diy yourself, mind posting for me to learn...kekeke.