Aero: If your tubs aren't transparent, clear plastic, you should have no problem. That's why I buy the gray tubs. Just make sure you cover the tops of your net pots. You can get the appropriate size white plastic net pot covers from most hydro stores and that will prevent algae and mold problems.
I was taught to change my nutes and water mix weekly and give everything a good scrubbing with dish washer detergent. Make sure you give everything a very thorough triple rinse. If you do that and make sure that no light is getting into your reservoir you're less likely to have algae problems that will cause drastic pH swings.
Normally my pH goes up from 5.8 to 6.1 or even as high as 6.3 if they're growing and feeding vigorously. That's why you check and adjust you pH at the same time every day. Actually that change is a good thing. It indicates your plants are taking in the nutes you're providing. Relax and enjoy it. I hope that helps. If not you might want to RTFB.
I wish there was an easier way, but from what you ask, I get the impression you might be new to this so I’d suggest you RTFB and refer to the following resources. You might want to start with Cervantes, Rosenthal and Greene.
1. Read: SeeMoreBud’s,
“MARIJUANA BUDS FOR LESS- GROW 8 OZ. OF BUDS FOR LESS THAN $100.” It’s a must for dirt gardeners using CFL’s.
2. You’ll also want to read: Mc McCarthy’s,
“GROWING MARIJUANA.” It’s another must for dirt gardeners.
3. Read: Jorge Cervantes’s,
“MARIJUANA HORTICULTURE THE INDOOR/ OUTDOOR MEDICAL GROWER’S BIBLE.” It’s great for dirt and hydro.
4. Read: Ed Rosenthal’s,
“MARIJUANA GROWER’S HANDBOOK.”
5.
“THE CANNABIS GROW BIBLE- SECOND EDITION,” written by Greg Green, is a match, if not better than, the ones listed above.
6. You should also subscribe to,
“HIGH TIMES,” magazine. Each issue is full of useful information and excellent photography.
7. You might also want to subscribe to
www.gardenandgreenhouse.net. It’s free and they offer a monthly news letter that always has a lot of good information, especially for newbies.
8. A lot of local hydroponics stores offer free weekend gardening classes. Admittedly they offer these classes as a means of boosting sales but they present some good information and they’re frequently taught by experienced gardeners.
All these resources are very well written, well illustrated and packed with information that will answer most of your questions before you know to ask them. Doing your homework
before you grow by consulting these resources will save you and your plants a lot of stress. These forums are great but often they’re the blind leading the blind and when you do get it from a knowledgeable source they frequently can’t get the information you need to you in a timely fashion. I sincerely hope this helps.
HSA
