showing my experience here aint i lol, it has 2 little jets underneath the lid and it they squirt rather than a drip, is that whats ment by high pressure ? I got this system years ago and never used it and cant find nothing on Google about it now, i used it once and remember ec never went over 1.2 then, the nutrients ive just picked up think brand is shogun saying 1.5 and i followed instructions and ended up with nutrient burn so my mate tells me, so do you think dont go over 1.2, the system uses 3 hydor l40 attached picture if you could tell me if its low or high pressure, sorry for all questions just relying on peoples experience because different sites saying different things. Topping plants people saying dont do more than twice and others say as much as want