# Any tips on how to pH large amounts of water?

**URL:** <https://ilgmforum.com/t/any-tips-on-how-to-ph-large-amounts-of-water/51974>\
**Category:** Indoor Growing\
**Created:** [August 20, 2020, 12:04pm UTC](https://ilgmforum.com/t/any-tips-on-how-to-ph-large-amounts-of-water/51974 "2020-08-20T12:04:32Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![3dots](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/3dots/32/358082_2.png) [@3dots](https://ilgmforum.com/u/3dots)\
**Post date:** [August 20, 2020, 12:04pm UTC](https://ilgmforum.com/t/any-tips-on-how-to-ph-large-amounts-of-water/51974/1 "2020-08-20T12:04:32Z")

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Hi all… here the link to my [grow journal](https://ilgmforum.com/t/first-time-grow-blueberry-and-sour-diesel-autoflower/51018/9).

I’m just coming to the close of week three since I dropped my germs in soil, on Aug 1.These girls are still so tiny.

During seedling I had my lights turned all thew way down and turned them halfway up a few days ago. Haven’t used any nutes yet. Watering lightly still. Thoughts?

Here’s my setup:  
Strain and type: Sour diesel and blueberry - both autoflowers  
Indoor  
Size of space (2x4x6)  
Soil: FFOF with a core of FFHF for the seedlings  
pH? Water is at 6, haven’t tested runoff yet  
Nutrients: none yet  
Temperature: Avg temp 74.6  
Humidity: Avg RH 77.2%  
Lights: HLG 260w xl qb  
Ventilation system: 4" 106cpm  
Dropped in soil: 8/1

 ![IMG_20200820_063148](https://global.discourse-cdn.com/growingmarijuana/original/4X/0/7/6/076c104ac233882705a47ce14a639182e8750ea7.jpeg)

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**Author:** ![Covertgrower](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/covertgrower/32/423081_2.png) [@Covertgrower](https://ilgmforum.com/u/Covertgrower)\
**Post date:** [August 20, 2020, 1:01pm UTC](https://ilgmforum.com/t/any-tips-on-how-to-ph-large-amounts-of-water/51974/2 "2020-08-20T13:01:02Z")

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Phosphoric acid in concentrated form will ph large amounts of water for ph down.  
Baking soda for up.

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**Author:** ![GreenSnek](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/greensnek/32/366307_2.png) [@GreenSnek](https://ilgmforum.com/u/GreenSnek)\
**Post date:** [August 20, 2020, 1:51pm UTC](https://ilgmforum.com/t/any-tips-on-how-to-ph-large-amounts-of-water/51974/3 "2020-08-20T13:51:32Z")

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That’s not to bad for 3 weeks it’s only about 3-4 days behind where’d I expect it( most likely due to that light being a bit low) they’ll bounce back just fine I’d recommend upping it to 20/4 or if you can spare it 24/0(just until preflower shows up) just to push them to veg a little harder

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**Author:** ![3dots](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/3dots/32/358082_2.png) [@3dots](https://ilgmforum.com/u/3dots)\
**Post date:** [August 21, 2020, 12:58am UTC](https://ilgmforum.com/t/any-tips-on-how-to-ph-large-amounts-of-water/51974/4 "2020-08-21T00:58:14Z")

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Sorry, all. I got the wrong headline on this post! Asking about size, not pHing. Apparently I accidentally did a weird copy/paste. I don’t know.

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**Author:** ![GreenSnek](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/greensnek/32/366307_2.png) [@GreenSnek](https://ilgmforum.com/u/GreenSnek)\
**Post date:** [August 21, 2020, 1:14am UTC](https://ilgmforum.com/t/any-tips-on-how-to-ph-large-amounts-of-water/51974/5 "2020-08-21T01:14:22Z")

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I figured it was since you didn’t mention ph once lol