Lighting calculator

Ray

Member
Joined
31 Oct 2007
Messages
520
Location
Switzerland
I have to say, coming back to the hobby after a 10 year hiatus, lighting is the area that got WORSE. Before we knew roughly how many watts of T5 or T8 per litre were needed to grow different types of plants with or without CO2.

Now we have beautiful efficient lightweight LED lamps but can’t say what they are putting out without a PAR meter that most people can’t afford to own.

What should we do? Lobby the manufacturers to all publish independently tested PAR values according to a certain standard? Should all the LFSs stores rent out PAR meters like the reef shops do?

75 watts on a 329l sounds low if you want to carpet or go big on stems. I reckon crypts, ferns and mosses will go with it, especially if you add CO2. But I’m only guessing


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EA James

Member
Joined
22 Jul 2019
Messages
202
Location
Staines-upon-Thames
Thanks again @Wookii
Yes I'll be adding quite a few more plants, in stages. Nothing difficult or demanding though as initially i was setting up as low tech.
Best solution i suppose would be to add the EA tubes back in and keep an eye on what happens, then think about the T5 tubes if things don't work out?
 

EA James

Member
Joined
22 Jul 2019
Messages
202
Location
Staines-upon-Thames
@hypnogogia thanks for the link, that's another option for me. Cheers

aquarium lighting is probably the area of our hobby that I find most interesting.
It's the one i find most confusing 🤣

@Ray check out my thread on the aquascaping section and you'll see what i'm going for, nothing demanding really although i would like a nice red stem or two but on the light basis maybe not. I'm hoping Ludwigia Palustris might be alright for me

Thanks all 👍
 

Ray

Member
Joined
31 Oct 2007
Messages
520
Location
Switzerland
Hi @Ray
I wasn't aware that reef LFSs did that? Does that include MA? Is this online reef stores only?

I'd really be interested in knowing more.
While I was checking the price of PAR meters recently I noticed in the US Bulk Reef Supply loan them: https://www.bulkreefsupply.com/7-da...spectrum-underwater-led-par-meter-apogee.html and perhaps foolishly assumed that means this was normal.
However googling just now I'm finding lots of people saying "how do I rent a PAR meter?" and nobody offering answers so it may be I am guilty of spreading misinformation! It may be worth calling around however...
 

jaypeecee

Member
Joined
21 Jan 2015
Messages
876
Location
Berkshire
While I was checking the price of PAR meters recently I noticed in the US Bulk Reef Supply loan them: https://www.bulkreefsupply.com/7-da...spectrum-underwater-led-par-meter-apogee.html and perhaps foolishly assumed that means this was normal.However googling just now I'm finding lots of people saying "how do I rent a PAR meter?" and nobody offering answers so it may be I am guilty of spreading misinformation! It may be worth calling around however...
Hi @Ray

Yes, you have confirmed what I suspected. My focus over the last few weeks has been on Cyanobacteria eradication. But, I hope to return to the small (!) matter of lighting very soon. I see you are in Switzerland. Do many Swiss hobbyists use PAR meters? With the Swiss reputation for precision engineering, they'd probably do an excellent job of making PAR sensors.

JPC
 
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