Dont apologise, it's baffling stuff.
Yes keep doing at least a 20% waterchange, but as much as you can manage would be better (you can't over do waterchanges) because you're going to need to do them regardless of the results from p @ h, so save yourself the trip. The readings may have been 0 today but even by tomorrow morning that will likely change.
What I suggest is that when you get your kit, start a new thread, call it 50 litre Cycling Log or similar, and keep it updated with daily readings and details of waterchanges done, day by day. This makes it easier to keep track for people to help.
Yes keep doing at least a 20% waterchange, but as much as you can manage would be better (you can't over do waterchanges) because you're going to need to do them regardless of the results from p @ h, so save yourself the trip. The readings may have been 0 today but even by tomorrow morning that will likely change.
What I suggest is that when you get your kit, start a new thread, call it 50 litre Cycling Log or similar, and keep it updated with daily readings and details of waterchanges done, day by day. This makes it easier to keep track for people to help.







