Anyone any experience of this? Instructions say go to 2x in a heavily planted tank but DO NOT EXCEED THE DOSE. I have no livestock, and I know about fissdens, vallais, etc being effected. Has anyone tried going higher? If so how much higher? Also if the objective is to nuke algae should I still add just before lights on or is it better to add after lights out so it hangs around longer. I know it bio degrades but not sure how long that takes...?