that would be excellent, thank you for doing that for us 😊
Not a problem, hopefully gives "some" interpretation regards how botanicals affect the ph of our tank water. Just keep in mind this a one off random test and other people's experiences may vary.
So I'll start with full disclosure, I made a couple of schoolboy errors! Firstly I didn't calibrate my ph meter, I realised this gigantic error after I'd started the initial test, and upon testing the meter in ph 7 buffer solution we can see there is some drift (0.04) I can only apologise and ask you bear this in mind with the results below. No calibration will be done over the course of this test.
The drift.
Secondly I should really have filled a tub with water and added nothing to it, this would have been the control marker to see if the ph varied over the course of 4 days.
Again I can only apologise, I'm an engineer by trade, not a scientist 😉
Enter the players.
These 2.5ltr containers were filled with tap water to the top straight line. Water tds was 59 tds, this is about average for this time of year, and sits in the middle of the united utilities water report readings. Average CaC03 claimed by UU is 12 mg/l, I think this equates to 0.7 dkh.
The above containers were left with lids off and ph readings taken after 24hrs.
The letters on above containers represent the botanicals to be tested, which are.
Alder cone.
Casuarina cone.
Oak leaf.
Parviflora pod.
Weights of said botanicals (I consciously chose 1 of each)
Alder cone.
Casuarina cone.
Parviflora pod.
Oak leaf.
200mls of water was poured from each container into a jug, the selected botanical added then dinged in the microwave for 60 seconds, this raised the temperature in the jug to an average of 60 C. This water and botanical was then added to the containers.
The tubs were left open throughout the experiment and rotated daily to try and balance temperature. They were stirred with a knife prior to any readings being taken. The ph meter was left in the tub for a couple of minutes before pictures were take to allow ph to stabilise. Once stabilised switching the meter off and on appeared to give the same readings.
Congratulations if you've got this far, here's the results.
20hrs.
44hrs.
68hrs.
And finally 94 hrs.
Make what you will of the above readings, they aren't exact, but they should give some idea what we can expect with ~0.7 dkh water.
As always if anybody is adding anything to the tank do it slowly and monitor, we can always add more if needed.
Will repeat the above experiment with deionised water later this week.
Toodle pip.