Any product that removes some of the more menial tasks associated with growing plants should be hailed from the rooftops – like the excellent Auto Top-Up Kit! There really is no need to continue manually topping up your system reservoir when this handy device can effectively do the job for you, only using gravity and the included adjustable float valve, 13mm flexible pipework and associated fittings! Simply set up a header tank and Auto Top-Up Kit and the valve that you position in the system will keep your nutrients at a constant level. Great for NFT growers wanting to save time and effort!