10-17-2009, 04:18 AM
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wow learned soooooooo much about lighting there, LOVE that thread that was linked kudos!!!
makes me want to let the rest of the forum know about this great info. totally made my decision up between a walmart fixture and a coralife fixture (goin with the walmart fixture).
just want toi get some clarification from you guys about a a few quotes i found It is the amount of light you use that determines just about everything else for the tank. If you have X watts per gallon for a standard geometry tank, that dictates that you need to use pressurized CO2 and good fertilizing. If you want to do without the CO2 you need to reduce the light to Y watts per gallon maximum. If you decide to use Excel, you can go a bit higher than Y watts per gallon, but not up to X watts per gallon.
This is because it is light that drives the growth rate of the plants, and it is that growth rate that dictates the concentrations of nutrients that you need to keep in the water, including a carbon source. When you have more light intensity than you have nutrients available to support, you don't get the healthy growing plants that are needed to discourage algae from starting to grow.
If 2 watts per gallon dictates using CO2, then if you don't use CO2 you need to reduce the light intensity. Does all of that make any sense?
A contrary viewpoint is that you can acclimate the plants to grow well with lower levels of nutrients for a given amount of light, but you have to be willing to suffer through some algae problems as they acclimate. I haven't tried this, but those who like the leaner fertilizing methods, like PPS or Pfertz, insist it works well.
this means i can get high light plants not based on kelven but wattage, then with a tank that measeures x you cnnont exceed y wattage or you will need co2 to balance everything?
then one more here
As far as what was said about the K rating not mattering, it's more a choice of aesthetic color choice by yourself, not growth of plants.
Then the normal cheap cool FL's work as well as the designer bulb color mixes if growth is the variable measured.
Aesthetics you can measure in other, more social scientific methods.
But as far as growth, they are in fact the same as far as the studies that have been comparing the two.
So pick a bulb that has a nice appealing color to your eyes/your senses.
But do not fall for the claim about better growth, less algae and the rest........
If you want real pretty reds, just buy Tom Barr's "Red Plant Paint" and get a brush. I gar-untee it'll make your plants red
and this means i dont need any fancy setup to grow high light plants and just reinforces the case that you could even use regular house lights then as long as you have enough wattage? (that quote was actually taken from tom barr himself)
Last edited by MoneyMitch; 10-17-2009 at 04:30 AM..