Question. Best PH level for watering plants in Soil?

6-7 somewhere in that range. give or take. U can get some distilled water that should work fine. U can even ph test it if u want.

it doesn't really matter that much but it should be around 6-7. That's the thing with soil if you use the right nutrients the soil supports itself

distilled water changes ph when exposed to air so test it as well. it also fluctuates rapidly. 6.4 tho

ph to 6.5 if in non all natural soil

Agree 6.5 for soil. There is a nutrient uptake table somewhere that will show what nutrients are up taken best at certain PH levels and what gets locked out at different ph levels. 6.5 covers all basis I have a fairly big garden and PHing is impossible for all the watering that needs to be done. The only time I will PH is if feeding synthetics. This years crop will be all organic with no PHing. My tap water comes out from 7-8 ph, it is run thru a dechlor filter and straight to the garden. Distilled water will short you on minerals and calcium and magnesium. all so if growing organic and adjusting PH with acid will kill your micro heard. Organic is so easy and maintenance free. If you get your soil amended right, top dress and use a ACT and nutrient teas once in a while there is no need for PHing or weekly feedings. Does one PH house plants and vegetable gardens ? Think about it ? PH and Nutrient Uptake charts!

I use unfiltered rainwater straight from the rain barrel provided by mother nature, usually between ph 5.5-6.0 and my soil is at a ph of 7

You dont need to worry about water pH if you use good organic soil. I use allmix soil with 8 pH tap water and my plants look great.

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In soil I'd also agree, just go all-natural and take care of soil organisms and it's no issue at all. That being said in soil I've personally found 6.5 to be 'safe' all round...

Pics of the 'rusty patches'?..

Rusty Patch! Me No Likey!

Damn I'd be upset too... Never seen anything like it on any of my plants myself...

Saw some pics of Cs/Mg deficiency now, looks quite close to what you posted, apparently caused by too low pH so yeah hope you nailed it.

add some Epsom salt to your waterings.

Try kelp for micro nutes. You could also try ...putting a few inches of good top soil and just water if Yer low on funds.