Thickness of nutrients

hi all,

I am making an auto nutrient feeder controlled by sms (txt msg) and am planning on using peristaltic pumps x 4 running on a variable minute timer (communal lighting time switch timer) set to precise minutes

http://cgi.ebay.co.uk/PERISTALTIC-DISHWASHER-CHEMICAL-DOSING-PUMP-4-DETERGENT-/130392758478?pt=UK_BOI_Restaurant_RL&hash=item1e5c0398ce

i.e the above one delivers 34ml a minute of which will be set to a specific amount of minutes 5 minutes = 170ml

I havent grown in many years and cant remember what the thickness of nutrients are i.e are they thin like water or thicker like syrup?

Im also checking if sensi grow ph "perfect" grow and bloom part A and B nutrients are 3ml per litre of water at full strength for each part?

Thanks
 
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