NEED HELP! Plants are getting round brown spots on them!

Room Temp; 83'
Humidity; 51-55%
Water Temp; 73-78
PH; 5.6-5.8
Light; 1000w HPS 18-22'' above plants
About 4 weeks old from germination


Ok so check out these pics of my plants. They have all been getting these spots on some of the lower sets of leaves. What the hell is that. Has anyone ever had this problem before, if so how did you correct it....

Is it a Nut issue or is this a Disease...

Both temps are too high, especially the water temp. What's the PH?

PH is like 5.6 - 5.8.... I wondered if the temp was too high. What does the water temp need to be at on average. other than the spots they are growing like crazy!

Thanks so much for the reply!

I keep mine between 60 to 65. Did you spill anything on the leaves at 1 time? If it's only the bottom leaves, i would trim them off just in case it may be some kind of fungal issue.

Room temp is warm. Water temp is dangerous and begging for bad root issues. Need to get it below 70 and better at 68. You said nothing about a most crucial element, nutes. What do have in there? With ph in that range it looks like you need some magnesium so add some cal mag or epsom salts.

UPDATE:

Alright so I went to the store today And Picked up some House and Garden Green Magic. Mixed is as suggested (i mixed a gallon worth) and turned my lights off for about an hour and sprayed the plants with a spray bottle. In addition to that I bought an Air Pump for my Areo System rez. Within a few hours they are greening up and starting to loose the Spots!

I can't believe it! I'm going to lower my room temp to about 76-78 as well.

I'll post an update in a few days and see what else happens!

I would worry more about that res temp.

I am also working on getting that cooled. I ordered a Cooling kit for my Rez Those bad boys are NOT cheap! 600$ Gotta have it though!

I woke up this morning and checked them out. They look much better! Bouncing back to Green very nice!

Thanks for all the help guys!

A few bottles of frozen water is very cheap. The idea is to break the warm cycle. It is over extended periods of high temps that cause issues. Drop a bottle of two in every day will do miracles.

superstoner1 said:

A few bottles of frozen water is very cheap. The idea is to break the warm cycle. It is over extended periods of high temps that cause issues. Drop a bottle of two in every day will do miracles.

Click to expand...

I like that Idea However. It just seemed like a lot of extra work and messing around.... I'm really trying to get this thing on auto pilot as much as possible So in theory you just don't want warm water for extended periods of time? But don't you want the water to gradually cool. Wouldnt using frozen ice be a shock to the plants?

Ice bottles will work just fine. I have harvested many o plants via the good ole frozen water bottle/2liter.

Done it for years.

I'm going to create this one tomorrow: https://www.rollitup.org/do-yourself/453926-25-diy-dwc-chiller.html got the cooler for 10 bucks and already got the pump so seems like a cheap and low maintenance enough solution. Basically going to drop the frozen bottle (or similar) in the cooler instead of the res directly.