You don’t have to buy it and then pre-treat it as often

Water Use a higher dose in reverse osmosis (RO) water

Ozi Tonic is a special blend of high quality  mineral salts and a range of organic compounds including soluble seaweed

we’ve always claimed you don’t have to be an expert grower in order to get bigger

Bluelab Carry Case Light Controllers70 You don’t have to buyProtect your Bluelab meter and enjoy hands free readings and storage Product Features Benefits Firm outer casing for impact resistance Two custom pockets for holding Bluelab probes Internal strap to tuck probe cables away tidily Netted pocket for meter and strap to hold in place Strong nylon strap with adjustable length 'D' hook at top of outer case for hanging Product Warranty Period Details Two year limited guarantee; proof of purchase is required.