ph ing

ok so im phing my water to 6.8 using a little vinegar but when i test again the next day it is back up again ? any ideas ?

should i just go buy some bottled water ? what is the benfit of this ?

You should go buy some ph Down at your local garden shop, lowes, home depot, hydro store. It'll come in a small box and probably be around $5, it'll last you for a while.

If you're using tap water and letting it sit out for a little while you should be alright, if you using well water or something you may want to get reverse osmosis filtered water, you don't need to buy bottled water...just go down to the grocery store or wherever you can fill up those 5 gallon jugs for like 25c a gallon, you may still have to adjust the pH but you'll know the water is good.

Make sure you mix the solution real well before you test it.

i am using tap water leaving it to de chlorinate phing it to 6.8 with vinegar ( is this the problem?) i get it to 6.8 then when i check my resevoir it has gone back up