r/hydro is a subreddit with 132k members. The community frequently discusses grow, harvest, first, genetics, and flower, and they frequently recommend/review grow lights.
A home for hydroponic cannabis gardeners. Post grow journals, questions, and discussions!
Popular Topics in r/hydro
#1
Grow
50 posts
#2
Harvest
21 posts
#3
First
19 posts
#4
Genetics
17 posts
#5
Flower
16 posts
#6
Auto
14 posts
#7
Dwc
7 posts
#8
Autos
7 posts
#9
Day
6 posts
#10
Seed
6 posts
Products Discussed in r/hydro
Grow Lights
1 review
#1
Viparspectra
5.0★ from 1 review
Member Growth in r/hydro
Yearly
+32k members(31.4%)
Similar Subreddits to r/hydro
r/cannabiscultivation
229k members
7.1% / yr
About
GummySearch helps people research Reddit communities by organizing activity, growth, themes, and post-level signals into one place.
This page gives a focused view of r/hydro, including current member size, discussion patterns, product reviews, and related communities to explore.
This data is synced periodically so insights stay current and useful for ongoing research.
Last updated: June 10, 2026