Using dolplomite lime to raise soil ph?

[Spongebob420]

Sup guys on my first grow atm. I've recently checked soil ph and it's real low, its sitting at 5.7 5.8. I done some searching online to see what I could do to raise soil ph and lime was the easiest and most known way to do it. Though I came across some bad comment reviews from people who had used it. Just wanting to find out if its ok to add this to my pot? I need to change my soil ph asap I'm worried shes going to go bad. Its a narcotic kush on day 25. Iv gave it a minor feed, 1.5ml tomatoe feed + 0.8ml of cal mag. Also would you guys say shes looking ok? Sorry pics arnt much can upload more, Any help would be great! Thanks guys:smoking:

 

[A-Train]

In the past I used lime but it was mixed in before potting. You needing to adjust a bit now so the only way to do that with lime is in the powdered form. I'm not sure the dosing but you can research it or wait on someone else to comment here. But powdered lime sprinkled on top of the soil and watered in will do the trick

 

[Spongebob420]

Hey A-Train I seen that powder form I'll have more of a look into it. Thanks for the help man will wait see what other people say what they think just to make sure. Thanks again man:smoking:

 

[A-Train]

@Waira will be making his rounds soon he's the man. I just try and help where I can. Hell get you dialed in

 

[Waira]

:smoking: hey Bob! ...So, it's dolomite you have, ay? Are you in true soil (what brand), or soilless (Promix, Sunshine)?...How did you take the pH, from run-off? this method is dubious as is, but there's an improved method here-> ( https://www.autoflower.org/threads/...-testing-and-ph-estimation.41733/#post-928975 ) ... for the moment, taking that reading at face value, you're not too bad, but how much to correct will depend on what medium you're in; soil likes to be low-mid 6's, soilless a bit lower, coco high 5's,... Now, the trouble with dolomite is it's the slowest acting form of lime there is, though being powdered will help some; it's chemistry is slightly different from Ag lime, or other limestone sourced forms... all of them dissolve slowly in water (acidity accelerates this of course), making them best for longer term buffering and nute' inputs.... your correction isn't big, so lets see what water source you have, and it's pH, and ppm or EC if you can get it,...I want to see how hard your water is, how much dissolved CaCO3 is in there,...likely, some higher pH watering can correct it enough for now,... even using a pH up product is fine! Do you have Ca-Mg? Because dolomite is so slow acting, it won't get the job done in time to be effective right now,... got an idea-- get a qt of water, take the pH (make sure your meter is freshly calibrated), and then pour 1/2 cup of dolomite in it... let it sit for several hours, and see how much the pH went up... might be able to make your own pH up solution,... otherwise, surface treatment is very inefficient because so little of it is exposed to the soil, being poorly dispersed,...that's why it's best worked into the before planting... Ag lime or oyster shell powder will work faster, and there are other synthesized products that are made to do both slow and faster acting release,...

 

[Spongebob420]

Hey waira, I'm using bio bizz light mix with around 30% extra perlite added and I'm using 3gal pots. I used the your method when I checked ph, I saw it on the forum, great help man The only thing ive done not done is the ec testing as I need to get an ec meter ive ordered one waiting on it coming. Powdered lime is due tomorrow. I have ph up liquid form just now, would there be a point in trying with it? And yeah I have cal mag. Thanks for all the help man:smoking:

 

[Waira]

... Biobizz light.. don't think there's any lime in that mix, does it say on the label anywhere? Small wonder the soil is drifting acidic,... So, trying the pH up is fine, as mentioned, with that small of an adjustment to get your feeds up to low 6's,... what's your water source, and it's pH? might be fine to do a minor flush with 6.5pH water, or close to that, with the Ca-Mg mixed in.... the lime, won't hurt I guess to try dusting a couple tablespoons worth on the top, and scratch it in some,... I think the light flush and then keeping your feed pH's above 6.0 should set you fine,...

 

[bad dragon bzzz]

i got some biobizz light mix a while ago.i was just looking for somewhere to post the info,maybe here is best for now.
View media item 5944View media item 5945View media item 5946

 

[Waira]

...:smokingas es gute! Thanks Arch' -- too bad I don't understand German ...maybe my brudda Bromeo reads enough to see if lime is listed as a minor substanz,... I still dont think there is,..

 

[bad dragon bzzz]

sorry it seems uk instructions are next to non existant just ph and ec but german and spanish have 2 paragraphs.i hope the numbers told you what you needed to know.