freshwater and power compacts.

The friendliest place on the web for anyone with an interest in aquariums or fish keeping!
If you have answers, please help by responding to the unanswered posts.
Some pc bulbs are 50% actinic, which doesn't really help plants, and may promote algae. Other than that, pc should work great.
 
actinic lighting promoting algae is a misnormer.. but yes it doesnt do much for plant growth, IMO ist a way of using PC lighting and limiting the watts per gallon so you dont have to go to high light needing the CO2 and such..
 
well the thing with live plants in an aquarium is that you want to give them optimal conditions so that they can out compete algae for nutrients. With actinics, the light that they provide is not very useful for the plants in the tank, but some algae can use this small amount of light to cause problems. So, I have seen plant tanks with actinics (with normal daylight bulbs)do ok, it is just not a great thing to do. especially because of the light intensity of pc's.

But yes, pc's are great for plants as long as you get them in and acceptable color(kelvin temperature), common freshwater pc bulbs are great and most are in the 6500k range which is good for plants.
 
With NO lights there is a general rule: less than 2 or 2.5 wpg is a low-light tank, more than that is a high-light tank and you probably need CO2. Is there a similar rule or cut off for pc's?
 
rich311k said:
Same rules for PC lighting.
Yep, except you can cheat a little.

and technically it's:
1wpg = low
2wpg = medium
3wpg = high

but at 2.5wpg of PC's you're in the high light category. with 3wpg you should be able to grow any plant if you have PC's. if you have NO tubes, then you may need to bump to 3.5wpg for a few particular species.
 
Back
Top Bottom