no. add nothing. just tap water. The only reason we adjust our pH is so that our nutes can be in the proper ph range so the individual nutrients can break free of their salt chelation bonds. You are flushing all the nutes away. There is no need to worry about pH. The plants don't care. The soil doesnt care. Any microbes or fungi in there don't care. Next watering, when you add your nutrients again, and the plain water watering after that, yes, adjust the pH.
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So I added the second filter on the exhaust and all the smells went away in an hour !!! happy wife now, so i'm happyThe best way to control smell is to mount the filter inside the tent and use your fan to pull air through the filter and out the door. Usually I like to mount the fan directly onto the filter and then out the window from there. For my input I just put a simple bug screen at the bottom of the fan.
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. If you were overrunning your carbon filter and the additional filter caused enough of a restriction to have slowed the airflow... well, that might cause issues over time if the fan's motor starts running hot. If your (original, single) filter was nearing the end of its service life - but still providing some benefit - and you added a filter instead of replacing it, as your old filter continues to decline, you may discover that your new filter is not adequate to handle the odor load all by itself (buy a third filter, lol?). Et cetera.I had only 1 grow with 1 autoflower plant with the filter I have. I only have 2 similar plants this time. My first thought was that my air velocity was too high, adjusting that didn't help. My next thought was the filter was bad or cheap so I bought a new (different one)... that couldn't control the smell either. Putting the old filter on the exhaust was a perfect fix since I had the filter available and I only have ~2 weeks longer to grow and I don't plan on grow more for a while (I have more then I need). Today I harvested one of them so should be clear sailing from herePossibilities are: Filter inadequate capacity for exhaust fan (fan moving air through filter at too high a rate), filter "used up," unfiltered air somehow able to bypass filter (leak(s) in grow tent, etc.).
No, I would not run two carbon filters on one exhaust fan. Instead, I would get ONE filter that has an airflow capacity that (more than) matches the highest airflow rate my exhaust fan would be moving air at. And check for leaks, of course.
Probably the first thing I would have done - after looking for a hole somewhere - would have been to turn the fan speed down and see if that helped; regardless of whether it led to elevated temperatures, it would have told me something... if that stopped the odor, I would have known to either not "overrun" my filter - or, if I then determined that conditions required a higher airflow rate, I would have bought a larger capacity filter. <SHRUGS> Or a better one, if my current one was an el cheapo brand of questionable quality.
Multiple exhaust filters, IMHO, are for medium-sized (commercial grows larger than a grow tent or single room, but smaller than warehouse) grows. >100 square foot spaces.
On one hand, the impulse is to state "...but whatever works for you, works." On the other hand, however, is the opinion that you've simply stuck a band aid on your problem, rather than solving the issue - and that a band aid is best used for one's finger
Get ONE good exhaust filter, matched to your fan.
There is a thread on here about making your own filter. What are your thoughts on that? Being able to change charcoal when needed seems kinda convenient to me. I ask because I am looking to upgrade my ventilation system. Thanks.Possibilities are: Filter inadequate capacity for exhaust fan (fan moving air through filter at too high a rate), filter "used up," unfiltered air somehow able to bypass filter (leak(s) in grow tent, etc.).
No, I would not run two carbon filters on one exhaust fan. Instead, I would get ONE filter that has an airflow capacity that (more than) matches the highest airflow rate my exhaust fan would be moving air at. And check for leaks, of course.
Probably the first thing I would have done - after looking for a hole somewhere - would have been to turn the fan speed down and see if that helped; regardless of whether it led to elevated temperatures, it would have told me something... if that stopped the odor, I would have known to either not "overrun" my filter - or, if I then determined that conditions required a higher airflow rate, I would have bought a larger capacity filter. <SHRUGS> Or a better one, if my current one was an el cheapo brand of questionable quality.
Multiple exhaust filters, IMHO, are for medium-sized (commercial grows larger than a grow tent or single room, but smaller than warehouse) grows. >100 square foot spaces.
On one hand, the impulse is to state "...but whatever works for you, works." On the other hand, however, is the opinion that you've simply stuck a band aid on your problem, rather than solving the issue - and that a band aid is best used for one's finger
Get ONE good exhaust filter, matched to your fan.
There are several threads on making our own filter and several on how to go about cleaning the charcoal in a filter that has reached the point where it does not filter as well as it should.
Great point. For some reason I thought the fans and filters were pricier than they are. I have no problem dropping 200 a year on a new fan and filter. Haha. Thanks for the help.There are several threads on making our own filter and several on how to go about cleaning the charcoal in a filter that has reached the point where it does not filter as well as it should.
Taking care of a used filter does involve time. It has to be taken apart and the used charcoal heated up to be cleaned. Some charcoal is lost/disappears so replacement charcoal has to be found. The cleaning process does smell and give off some smoke if I remember. Up to the grower to decide whether it is easier to spend the time rebuilding a filter or going to work for an extra hour a week for several weeks.
I do have a used filter sitting around just in case I decide to give it a try one day.
The fan should last longer than the filter. Long enough that it might wear out several charcoal filters before it has to be replaced. Only got to replace the filter which means even less time spent at work making the money needed.
Hey Guys & Gals
i’m getting a lot of great info just from reading your guys conversation with each other but I had one question I wanted to double check with you guys on, what do you mean remember you are feeding for two watering cycles? Do you mean you are putting double the amount of nutes it says on the chart during one watering? @Emilya Green
If I’m not mistaken she always said if they say 100% then use it.
Generally what it means is that the watering schedule is water with fertilizer and then wait until the next watering and water without adding any fertilizer. Most the time the schedule and the feeding chart are based on the grower watering at least twice in a week. The next week repeat with water and fertilizer and then just water several days later.
