pH pen issue...
GrowingGranniestarted grow question 4y ago
I've got two pH pens... one from Vivosun, the other one is Apera... I calibrate both of them on the same day, same time... one reads my nute solution at 6.3, the other 5.7. What would YOU do?
Open
Other. General questions
likes
Answer
PapaBlobanswered grow question 4y ago
Yeah, I've been seeing people write about very precise pH values for a while now. While the best lab pH meter I use at work (very expensive) isn't really accurate to 0.1. 0.2 would be more accurate, and that's freshly calibrated. The pH also depends on the temperature. A precision of 0.5 (at 20°C) doesn't surprise me. That's actually pretty good for cheap pH meters.
likes
Complain
AsNoriuanswered grow question 4y ago
granny, then you do it wrong, test them on calibration solutions, don't throw them out.
Calibrate. Turn off both, same big glass of tap water. both in - reading.
turn off. both to 4.0 calibration solution. reading
turn off. both to 7.0 calibration solution . reading
if any lies to calibration - this one is dead. small drop while delivering, could make your meter bad from the start.
likes
Complain
Organomananswered grow question 4y ago
Use both and split the difference! ^(that would do my head in though!)*
Or....pick one pen and never use the other.
likes
Complain
Mr_Weeds_Autosanswered grow question 4y ago
Go old school and get General Hydroponics pH Test Indicator, it never fails. I always test with my pen first then test again with the drops just to ensure I'm getting a correct reading.
likes
Complain
ClydeGrowsanswered grow question 4y ago
Had the same issue so I said fuck pens (unless you have hundreds of bucks to spend, and then the pens become decent again haha)
For less than I got a root farm pH test kit that uses a sample plus drops. Very accurate, very cost-effective. I'm not looking back! I think you can get similar tests for aquariums so lots of brand options out there 😎 good luck
likes
Complain
Similar Grow Questions
Solved
marzadz
not straight leaves ?I’m not sure if this is a problem but my she is 3 weeks old and her leaves aren’t seem to be very straight, curling on the sides. I’ve heard it could be something to do with the humidity being high. Is it a problem or do most plants do this :)
Other. General questions
5y ago
2
2
Solved
m0use
How Fruity Will It Get??Have you ever grown out a pineapple strain before?
How pineappley should I expect it to be?
Scale of 1-10
1=No smell/taste
10=Fresh Pineapple cracked open in your face, juices spraying all over and getting in your mouth and stinging you in the eye, but strangely you love it3y ago
7
4
Solved
Kayanesta
Rain flushing nutes out?Hey guys, I’m growing autos outside and the weather has been very wet and windy. The soil in the pots haven’t dried out in about a week and I’ve been feeding as normal it I’m wondering if I need to feed more because of the rain soaking the soil. Are the nutes being flushed out?Other. General questions
4y ago
2
3
Solved
LukeLaBam
Flashing and Darkness before harvest?The week 9 of my Purplematic just started,it looks like she need 1 week to cut her down.I wanted to know if I need to flush her a week before cutt,and it is worth leaving in full darkness for 48 hours before harvest? Thanks.
Other. General questions
Plant. Other
3y ago
14
8
Solved
Hammerhead420
??How do you control the bucket temp??My First DWC and was wondering what the easiest way to keep the bucket water cooler was, methods that anyone has had success with?
My water is creeping up and I was wondering if the is anything I can do besides a chiller and $$$$$ of dollars.
Thank you for you time!!!5y ago
1
1
Solved
Tryna_grow_Tonya
1 week post flipWe are 1 week post flip. Only change so far is growth, plants having a good stretch but nothing else happening, normal or? Am I being too impatient at this stage lol 😂 also at what point should I defoliate abit to cause the least stress thanks
Other. General questions
6y ago
5
3
Solved
Farmer99
ventilationbest way to introduce and expel air from the grow box?Other. General questions
6y ago
1
Solved
iMpulsive_Grow
Plant sizeDay 9 and I feel like my plant should be bigger. Any tips to give her a boost or is she fine?
Other. General questions
Techniques. Other
6y ago
2
2
Solved
mark4686
Potential yieldShe's close to harvest and I am wondering how much grams she will yield..as you can see in the pics she's really tall (130cm) and full of buds, I already started to flush her and I've been giving her 275W of light with a 19-5 schedule. Thank you in advance :)
Buds. Other
Other. General questions
Plant. Other
6y ago
18
8
Solved
awwwwwwwwwww
Are these amber trichomes? When will she be ready?Hey everyone. I just took this picture and I think I see amber trichomes on the lower right. Is this true? If not, how much longer do you think it will be?
Please download the pic and zoom in if you don't see them at first.
Other. General questions
3y ago
2
2
Solved
Nylanderfour20
Putting back into veg before pistils and sexual maturity?Can you veg even after a 12/12 from seed has been in flower room 3 weeks shes just not big enough and would also like to top her so I really am considering it, the reason being is I can't see one pistil yet which means she's not mature, I don't see why it would make a difference
5y ago
1
2
Solved
Siriuz
Urgent need help what do u think?Update on glue gelato, please let me know if she's alright, first week after germination and already had to change her soil since she didn't like it there and also had to place her on a solo cup with more perlite to increase oxygen in case she was over water or too much light
Other. General questions
Other. Other
Setup. Seedling
6y ago
2
Solved
OrihimeDelta
What causes hydro Ph fluctuations early in the grow?What causes dramatic ph fluctuations in hydro conditions so early in the grow, and how can I mitigate it? I have hard water, so I know that’s part of the issue (I tried to install a RO system recently and failed miserably). Other than frequent testing & additives, what can I do?
6y ago
1
1