If you can see algae on the roots then yeah, it could potentially be an issue. The reason you have algae there is because you can see the roots. Algae needs light to grow..and translucent pots allow that light in to the roots. Maybe upsize to a proper pot with some new soil?Baba Ku: OK, I'll just stick with CFLs then and try some LST. As far as efficiency of vertical set up - I did some reading earlier and it seems to be very efficient. However, in my case it may be difficult to adopt. My box is in the middle of my living room so it has to be stealth. Additionally, box is exposed in front, back and top. That leaves me with only one wall to fit intakes, outtakes, electrical wiring etc. (ironically, its the small wall of my cab). Adopting vertical light might pose the need of additional air ducting -> stronger fans -> more noise to cope with. At this point I'll just keep it the way it is. It's my first grow for my personal use so I'll be happy with whatever results I will get, learning as I go.
Other thing - today I noticed green algae(?) around roots. I know somebody posted here question weather it's a good or bad thing to happen but I can't recall it now. So should I be concerned?
Again, thanx Baba Ku
All that said, a little green on the roots certainly won't be a grow killer.
Be sure to anchor the main stalk down low, and pull the plant in the opposite direction the first time you LST. This will help to keep the root intact and undamaged.
You can see some of my low anchors here...
This is my 150 box set up vertical.