That should be ok. How are you testing pH?I add slowly through the day, 55ml in 400lt tank dkh is 7.8
do you mean dose 10ml at a time or 10 ml in total?That should be ok. How are you testing pH?
Like @Buddy said, it is quite common for pH to drop at night, so if your first test was during the day and second one was after lights went off, the pH drop is expected and unlikely to be related to Vinegar.
I have measured pH drop, due to Vinegar, in my 200l tank and doses larger than 5ml will drop pH for a short period. Using the same logic, I would keep your doses under 10ml. I would try doses as small as 5ml.
In addition, this nightly pH drop is no a big deal and most of the time is not worth trying to correct it. Still, it can be minimised by allowing fresh air to enter the tank's room; or reverse light cycle refugium; or with a Co2 Absorber (expensive) inline with the skimmer.
What time do your lights come on?just tested again it 4 hours later 5.45 pm and it is up to 8 again
Small frequent doses are better than a few larger doses.do you mean dose 10ml at a time or 10 ml in total?
thanks, how big is your tankWhat time do your lights come on?
Also, if you are getting a 0.2 swing in pH I wouldn't even worry about it.
Small frequent doses are better than a few larger doses.
I dose 70ml per day and split it up by 14 x 5ml. Also I only dose while lights are on to minimise pH drop.
I have only started a few weeks ago dosing, and have been increasing slowly, also added a new skimmer 2 days ago( coral box) so i haven't seen any improvement as yet,but hoping, everything else in my tank is reading good but those DAME NITRATESIt just depends on your tank. I am not heavily stocked.
If your dosing is keeping your nutrient levels where you want them to be then it's fine.