Plant hospital

Glider

Glider

Member
This is a question on watering or reservoir temperature. I am running one jumbo rock wool with a flood to drain. Flooding 2X/day for 2 minutes. One plant in Fox farm dirt watered once a day. 15 clones in a home made Aeroponics setup watered 10 sec every 270 sec. I vegged on Technaflora then changed to Advanced Nutrients Sensi Perfect pH with their Hobbyist Bundle at the 5 week of flowering. (I could not keep the Technaflora pH from going acid.). PPM is ~1400 as per Advanced feeding formula, pH is 5.8 to 6.1. My lights are a mixture of low wattage LED's and CFL's. I also inject the room with CO2 three times a day. My room runs at 87F and (here's the problem and question) my reservoirs are running at 78F. I do not want to vent my room because I do not want to loose my CO2. Am I going to loose my plants to root root because my water is too hot? I am worried because my Rock Wool plant is doing so much worst than my dirt plant.

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The first photo is the Fox Farm Ocean Forest plant at 15 wks of grow time and in the 5th wk of flowering. The second photo is the plant growing in Rock Wool.
 
kpmarine

kpmarine

Well-Known Member
Glider said:
This is a question on watering or reservoir temperature. I am running one jumbo rock wool with a flood to drain. Flooding 2X/day for 2 minutes. One plant in Fox farm dirt watered once a day. 15 clones in a home made Aeroponics setup watered 10 sec every 270 sec. I vegged on Technaflora then changed to Advanced Nutrients Sensi Perfect pH with their Hobbyist Bundle at the 5 week of flowering. (I could not keep the Technaflora pH from going acid.). PPM is ~1400 as per Advanced feeding formula, pH is 5.8 to 6.1. My lights are a mixture of low wattage LED's and CFL's. I also inject the room with CO2 three times a day. My room runs at 87F and (here's the problem and question) my reservoirs are running at 78F. I do not want to vent my room because I do not want to loose my CO2. Am I going to loose my plants to root root because my water is too hot? I am worried because my Rock Wool plant is doing so much worst than my dirt plant.






The first photo is the Rock Wool plant 15 wks of grow time and in the 5th wk of flowering. The second photo is the plant growing in Fox Farm Ocean Forest.
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The pics didn't show. Frozen water bottles make great cheap rez chillers.
 
Glider

Glider

Member
that was fast. I just uploaded the photos. I found that there is no way to do it from an iPad. Any way I do use the frozen bottles but what res temp would you suggest as ideal and what should I look for if I can not get the temps down?
 
kpmarine

kpmarine

Well-Known Member
I've never had high rez temps as an issue, personally. I have seen alot of people recommend a silica additive though. Mine have only hit 75 at the warmest. CO2 puts you in a bit of a spot though. If your rez is going to be in the room, you really need a chiller. Seeing as you have to keep the temps higher and all, and you can't really vent.

Edit: Just saw he pics, d'oh. Your plants don't look too bad, a little droopy.
 
polyarcturus

polyarcturus

Well-Known Member
man you better turn off the co2 for the summer and start running hem fans sux i know, but the plant come first in my books. i run co2 but i turned it off for the next month or 2.
 
Glider

Glider

Member
Thanks guys. I guess I will have to loose the CO2 and vent. Next grow I am going to use only LEDs and get read of the CFLs. On an other thread someone said that the rez temp should be below 70F. Quite a goal.
 
kpmarine

kpmarine

Well-Known Member
Glider said:
Thanks guys. I guess I will have to loose the CO2 and vent. Next grow I am going to use only LEDs and get read of the CFLs. On an other thread someone said that the rez temp should be below 70F. Quite a goal.
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Honestly, it's about knowing your strain and working around it's tolerances.
 
polyarcturus

polyarcturus

Well-Known Member
jus try to keep it around 75 or below, insulate the ress ause ice water, really if your temps in your room start lower than 75, if your reses are insulated enough the temp should not go above 80 by the end of 12 hours. use Ice and vent for not thats your best bet. i would worry less about the flood than the aero sytem, reallly if you are using rockwool cube just put a fan on them to help keep the root sytem cool, if the water is not cool enough.
 
polyarcturus

polyarcturus

Well-Known Member
purp strains are great for heat, and a lot of sativas. afgan is good to. bluecheese not so much :((which was my situation)
 
Glider

Glider

Member
polyarcturus said:
purp strains are great for heat, and a lot of sativas. afgan is good to. bluecheese not so much :((which was my situation)
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I am running northern lights. I hear it is mostly indica and likes it hot (85F). I am using the frozen bottle technique for my aeroponic setup but those damn CFL's are really heating it up in there. I have started using Hygrozyme because it was worried that the high heat would start root root and help me keep the reservoirs from going acid. I also changed to Advanced Nutriants pH Perfect to try to keep the pH drift under control. So far so good. Just out of curiosity, how often do you have to adjust your pH in a drip or Ebb and Flow system?
 
kpmarine

kpmarine

Well-Known Member
Glider said:
I am running northern lights. I hear it is mostly indica and likes it hot (85F). I am using the frozen bottle technique for my aeroponic setup but those damn CFL's are really heating it up in there. I have started using Hygrozyme because it was worried that the high heat would start root root and help me keep the reservoirs from going acid. I also changed to Advanced Nutriants pH Perfect to try to keep the pH drift under control. So far so good. Just out of curiosity, how often do you have to adjust your pH in a drip or Ebb and Flow system?
Click to expand...
I never did have to, but I only used mine for about 2 months. Is it going acidic on you alot?
 
polyarcturus

polyarcturus

Well-Known Member
depends on your water are you using tap? it has a buffer that will make it change best way to handle this is to pH then come back 20 min later and pH again, when i was doing tap i would have to pH down daily so i gave up on all that and started running at 6.5 6.3 never had any problems. a good additive when it is how is silicon. grotek has a very good version loaded with K.

lol NL light it at a temperate temp i have grown the strain not prone to heat stress but, anything too over 80 would slow down their growth IMO.
 
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