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Glad you were able to learn something. The T5s look great.

Re: What would you do? Update! I tried all three of them out. :D The 65W CF bulb I already had was brightest, but quite close was the 28W T5. Dimmest was the T8 fixture. I liked the look of the T5s best, so I went with them. Rescaped the tank and added the new wood and plants. Will...

Re: What would you do? Plan A or B, simplified Yeah, I know WPG is misleading and only a loose guideline, this is what I tell people all the time in my forum, but unless you want to lend me your PAR meter, it's what I've got to work with. :lol: Thank you for pointing it out, though...

Re: What would you do? Plan A or B, simplified It is 2 x15W T8 vs 2x 14W regular output T5. No HO. Too poor for that. At least I think they are regular output. The T5 fixture wasn't that expensive. :lol: The T8s would give .83WPG. The T5s would give .77WPG. The tank is 21" deep, but...

Re: What would you do? Reducing the lighting in my 36g corner b Yes, I know that 130W over 36g is about 4WPG. I know how to calculate WPG. :lol: I don't want to raise lighting, but lower it. I changed the question in the first post to reflect WPG, sorry for my error. I was using...

Re: What would you do? Reducing the lighting in my 36g corner b That is what I'm thinking, which is so funny. Just buy some better bulbs. llj

Never mind about the lumens then. And I thought I was being all smart with the calculations. I don't have a PAR meter, I'll restructure my question with WPG. Which is better? A. 28W of T5 over 36g B. 30W of T8 over 36g I know both are very low light. The plants would be picked...