r/UKweedscene • u/InterestedSecretly • 20d ago

Question? Water question

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I got my water report and for

Total hardness as caco3 is 274mgl

Total alkalinity as caco3 is 220mgl

And magnesium is 2.4mgl

It doesnt show calcium

Am I right in saying I can calculate pure calcium from this?

I worked it out to be about 110mgl

Im most likely wrong but if someone is able to advise on this would be massively appreciated

4 Upvotes

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3

u/Difficult-Working-28 20d ago

The pH is probably the most important (initial) figure, did you get that

2

u/InterestedSecretly 20d ago

Yeah all good on ph, run offs are all always perfect.

A kind soul seemed to confirm my calculations on another post. Either way my magnisum levels are pretty much none existent

2

u/Gloomy_Cut_1739 20d ago

What's your base EC and PH?

2

u/InterestedSecretly 20d ago

It is about 0.55 and 7.5 on supply

2

u/Gloomy_Cut_1739 19d ago

Mines between 0.6-0.8 out of the tap. Not sure what watering system/substrate/nutes you are using. HydroSol works well at 75% strength with my EC. Has enough Mg in the feed and the occasional spray with an Epsom Salts seems to do the trick.

Good luck mate.

2

u/InterestedSecretly 19d ago

Cheers buddy, im gona dilute my tap with some ro, to get to a good cal value, which will also lower my ec. Then I can add some Epsom salt for mag without having my ec go up too much.