What makes are people using? And why ? Any difference in the contents other than the price ??

Try the chemical factory run by Duncan griffiths, very good quality and the right strength.

Regards

Wayne

cheers sid

I check to make sure it’s 2% malachite, some brands only use 1% and it’s in the small print.

Laura

use aciflavine and salt all gone in one pass,and filters ok.

Chris - interesting alternative. What strength/useage do you recommend please

Use 5 grams to 220 gallons acriflavine powder with salt at 3/4 ounce per gallon. That's the normal dose can be safely overdosed.

Tony