after a month or so with a clean tank here they go again:
This is despite weekly reconstituted RO water 20-30% changes and good values also testified by good plant grow and several healthy and thriving T. Espeii litters growing up.
Current values are:
Ive got a couple new quart bottles of metricide 30 plus (3.4% glutaraldehyde). This is the active ingredient in flourish excel. Excel is 1.5% GLUT so diluting this down to 1.5 would yield over half a gallon each.
Asking $15 shipped per bottle or $25 for both
Would also trade for some cherry...