[vvDO]

So my substrate is about 2-2 and half inches deep or so... So around 19 inches.. That would put me at a PAR of around 22-24 with the Beamswork Razor LED if I'm correct? Good enough for non demanding plants in a low-tech 55?

Your PAR will most likely be a bit higher if you have a std 55 with a 48" fixture.



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[vvDO]

Probably the closest fast growing plant I will be doing is Rotala. That plant usually grows like a weed for me even in low-tech. Besides that mostly Crypts, Java Ferns, Dwarf Sag, Water Wisteria, Amazon Swords, Banana plants, Moss balls etc.

I've just been eyeballing that thing for a while and wonder if it's the right way to go or not. I don't want algae issues though.

I think you'll be fine, if you have a glass top that will reduce your light even further down to the low mid 20s and you can always raise the light a couple of inches to give more coverage and less par.


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