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Are there others having a severe Ph drop from R/O systems? I am wondering if everyone uses the standard Ph Up. (potassium carbonate/potassium silicate) Or does anyone have experience with Calcite Filters? Seen a couple of 10" Calcite filters around online.(Calcium Carbonate instead of...

Water quality is a key factor affecting pH and nutritional management in container-grown crops. Understanding a few technical details about water quality will help you improve nutrient management appropriate for your own greenhouse. In this article, we will discuss the difference between water...

In addition to light quality i.e. MH/HPS, you can control plant height by manipulating flower chamber air temperature. Stem elongation is strongly influenced by the difference (DIF) between the day air temperature (DT) and night air temperature (NT). This is represented as: DIF = DT – NT...

What could happen if I cant get my day and night temps to change enough? Do I need to change my entire room design?.... I have a 4 chamber set up. All chambers are designed the same way. Clone, Veg, and Mother Chambers are fine its just the Flower Chamber that may be the problem. So the...

Why are temp differences needed and what happens if you cant achieve the proper differential? How much of a temp difference is acceptable for proper budding?

Where do you get intake air from when its freezing outside? My fans are creating negative pressure on my entire house. I have a 2300 sq. ft. home and its hard to close the doors. Where do people living up north get their intake air when its winter? I want to pull from outside but my grow...

I think its time for some different opinions on the pros and cons of feminized seeds. A major concern seems to be whether the fem seeds are more likely to produce a hermie than standard seeds. Also, can the hermie genetics ever be bred out of a strain. Has the breeding advanced enough to...

I have seen a lot of questions about Exhausts and Intakes......Should I use exhaust or intake fans? Should i have a bigger fan for supply and smaller for exhaust? let me help clear some of this up....After 20 + years of HVAC work you learn a lot about airflow. The exhaust and intake air will...

dont click on this.........dont do it...... failure to follow instructions........deduct 1 point its not looking good for ya.. lol

Does anyone know of any strains that are harvested while the hairs are still white? Or does every strain turn brown towards harvest? Is there ever a time that the trichomes start to turn cloudy or amber while the hairs are still white? I have a bagseed strain that is doing just that....the...

Does anyone know of any strains that are harvested while the hairs are still white? Or does every strain turn brown towards harvest? Is there ever a time that the trichomes start to turn cloudy or amber while the hairs are still white? I have a bagseed strain that is doing just that....the...

Does anyone know of any strains that are harvested while the hairs are still white? Or does every strain turn brown towards harvest? Is there ever a time that the trichomes start to turn cloudy or amber while the hairs are still white? I have a bagseed strain that is doing just that....the...

Does anyone know of any strains that are harvested while the hairs are still white? Or does every strain turn brown towards harvest? Is there ever a time that the trichomes start to turn cloudy or amber while the hairs are still white? I have a bagseed strain that is doing just...

Different seedbanks have different degrees of difficulty for the same strain. What is the difference in difficulty? Comparing something like a silver haze to a skunk, there is a huge difference on the websites but Im curious how different. What makes an easy grower different from a hard to...

Different seedbanks have different degrees of difficulty for the same strain. What is the difference in difficulty? Comparing something like a silver haze to a skunk, there is a huge difference on the websites but Im curious how different. What makes an easy grower different from a hard to...

Different seedbanks have different degrees of difficulty for the same strain. What is the difference in difficulty? Comparing something like a silver haze to a skunk, there is a huge difference on the websites but Im curious how different. What makes an easy grower different from a hard to...

I see a lot of people on here saying exactly how their seeds are sent. They are including every detail...Please dont. There are not many seedbanks that you can trust anymore, the good seedbanks and their customers need all the privacy they can get... It is not gonna get easier to buy seeds...

How big of a difference in bud size is there at the end of 4th week flowering compared to harvest time? I realize different strains have different times and will show different things but in general what kind of size change should I be looking for.. I mean, are the calyxes much bigger, are...

Is potency determined by trichome count? Is it determined genetics only? Does the visual number of trichomes determine how much thc is available? The reason I ask is because the photos of various strains seem to show much different trichome counts. Some look covered and some look like they...

Soil temp below 60 degrees F. Water is 780ppm from tap...What are my options? I have four plants in 5 gal. buckets. 1 is on the floor and the other three are raised a foot off the floor.. The difference in temperature is 20 degrees from the bottom of the bucket on the floor to the mid to...