The Grow Awards 2026 🏆 
White substance appearing on air tube. Anything to worry about?
Hempy_The_Kidanswered grow question 3y ago
Hard water calcium build-up. Should be fine unless you want to add filters on your water source.
Organomananswered grow question 3y ago
Correct, just dried out nutrient salts/calcium due to evaporation.
Nothing to worry over.
likes
Complain
Similar Grow Questions
Solved
Osito
How should I harvest?So we are 2 weeks out from harvest, but I’m wondering would it be more efficient to defoliate fan leaves and hang the plant upside down, or to cut it into multiple sections? At week 22 I believe in our diary we have more pictures.Other. Harvest - Drying
Other. Harvest - Curing
Other. General questions
3y ago
2
2
Solved
Sirsmokealot713
Deficiency?So I am thinking I may have overwatered my ladies. Thoughts? I have 5 and 4 are showing the same signs..yellowish.Leaves. Color - Yellow
Other. General questions
6y ago
3
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
plasticbeach
Twins or different species?3rd grow, so still a complete noob, didn't know twins were a thing before these popped up. Both were close, similar, developed in sync at the beginning, but one plant's leaves developed too weird to be the same species. Twins with a weird mutation or different species altogether?Other. General questions
3y ago
3
2
Solved
CANNA_401
Luftfeuchtigkeit zu hoch für die Blüte? - Methoden zur LuftfeuchtigkeitsregulierungIch merke das ich die Luftfeuchtigkeit nicht dauerhaft unter 50% bekommen werde, denkt ihr ich sollte in einen Luftentfeuchter investieren? (Sensor auf Pflanzenhöhe)
Ich will nicht riskieren das sich Schimmel and den Blüten bildet.
Danke schon mal für die Antworten 💪👽2y ago
7
1
Solved
tangie
Timing a 7d flush — will it over-ripen if I begin flushing when it's ready for harvest and keep it for 1 more week on flush juice?Need advice on timing a 7d flush. My 2nd grow, both (Sativas) flowered signif. longer than advertised (+2-4 weeks).
To know when to start flushing, do you visually estimate when a plant is no more t 1wk from harvest? If I start flush when it's ripe for harv, too late or ok?1y ago
8
9
Solved
Skylife
Recommend flushing?Week 8, she’s fattening up. When does anyone recommend flushingOther. General questions
Other. Other
5y ago
2
Solved
Shadow_Project
Moving her from inside to outsideI will put her outside as soon as weather is good enough in a few weeks. Direct sun from approx 9:30AM till 6:30PM. Now at 20/4 under CFL. will it stress her? Do I have to ease her into this or just move her directly? Aim for putting her out during veg or flower? TIAWeek 3
Other. General questions
5y ago
3
1
Solved
xauberer
Remove more leaves or notShould I defoliate more and remove small buds, or is it better not to stress the plant during flowering?
Also, why do the two plants on the right look so different? I didn’t do anything differentlyLeaves. Too many
Leaves. Twisted
Other. General questions
8mo ago
1
1
Solved
Hou_Stone
I had not filled my pots enough, the heat accumulates inside it can go up to 32° without a fan. Currently I have added fans but I'm afraid it will dry out my plants.
A solution ?
(HPS 400w. I have 2 inlets that bring air at 20° to the bottom of the tent and an extractor at top)Week 5
Other. General questions
3y ago
7
6
Solved
Chill07
Going to get chopped👌My plan is to chop today if you think other please comment. I only see cloudy but the increase of amber is daily. Trying to get her at her best no couch lock. Mr
ORGANOMAN says 10 percent amber not sure if there but close. On the 20x i see more amber some picture show it.Other. General questions
5y ago
2
3
Solved
Toking12am
Male and female?Im thinking the second pic of these is not a female. I have never had a male plant so i wanted input before its too late.Buds. Other
Other. General questions
5y ago
2
4
Solved
KeepOnGrowin
Brown bud hairs?Does this look normal? First time grower so no idea. Plant is 60 days old. Concerned that "hairs" are turning brown. Is the white on the leaves "sugar"? Also, the plant has largely stopped making "weed" smell. So many questions . . .Week 9
Other. General questions
4y ago
14
6
