If you’re gonna go that route a sterile res might make more sense due to the large volume of water and high cost of hydroguard
im hoping to be able to get 148 litres into the reservoir when its full. how many litres is your reservoir and how often you refill it? i prolly wont add anything extra if its not necessary. i water 28 litres of nutrient solution to the 4 plants every other day. do you think i should continue with the 28 litres every other day or should i water less but more frequently? im unsure whats better.
there in place now tho ahah