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Planted tank lighting
#1
I understand some of the numbers relating to lighting. Wattage, spectrum colour etc but what am I looking for in the information about a light that would tell me whether it’s suitable for a certain depth of water?

For example a 20cm deep tank won’t need a light as powerful as a 40cm deep one would.

I’ve seen on here that some of you aren’t happy with some of the Fluval led lights but was it depth of light that was a problem?

Is there a number that can be assigned to depth suitability?


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#2
No, the fluval aquasky are straight up sh*t. They lack any power, cheap LED's etc... The Plant LED is a different story completely! The Plant LED uses individual LED's for each colour, the aquasky uses a RGB LED ( like the tape lights you buy )
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  • Cheltgirl
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#3
I've also found it very confusing as all the calculations I've found related to old tube lights. Noone seems to have updated the maths for LED stuff which throws it all out.

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#4
Lots of reading today and it seems the large majority of people really rate the Fluval plant 3.0.

Question: Is the Fluval nano plant the same technology as the bar/strip version?

The packaging and blurb would suggest it is?


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#5
(15-04-2019, 02:52 PM)Benville Wrote: I've also found it very confusing as all the calculations I've found related to old tube lights. Noone seems to have updated the maths for LED stuff which throws it all out.

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I’ve searched and searched and found some people giving conversion sums for the led vs tube but again it’s back to varying answers. Plus most give the Watts per gallon rating which is of no help at all when you need to know how good the light is at different depths.

What manufacturers should do is give a PAR readout at various depths which would be more useful.


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#6
(15-04-2019, 11:45 PM)Cheltgirl Wrote: Question: Is the Fluval nano plant the same technology as the bar/strip version?
The packaging and blurb would suggest it is?

Yup, same tech, smaller package. If you mean the square light and not the other nano they do ( C.O.B Nano )
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#7
You need to compare lumens or lux, not watts. Difficult with old tech lighting. Wink
If at first you don't succeed....
...get someone else to do it! Big Grin

Enjoy your fish, shrimps and snails!
Ian

All my posts are from a desktop.
Mobiles are way too complicated for me, although I do have one now. Wink
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#8
(16-04-2019, 08:41 AM)fr499y Wrote:
(15-04-2019, 11:45 PM)Cheltgirl Wrote: Question: Is the Fluval nano plant the same technology as the bar/strip version?
The packaging and blurb would suggest it is?

Yup, same tech, smaller package. If you mean the square light and not the other nano they do ( C.O.B Nano )


Excellent! I thought it might be but best to double check Smile

I’ve seen some videos of the COB one and it doesn’t look like it’s up to much but the plant stuff is looking very impressive.



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#9
(16-04-2019, 09:01 AM)plankton Wrote: You need to compare lumens or lux, not watts. Difficult with old tech lighting. Wink


Difficult when manufacturers don’t bother putting that info anywhere either grrrr! Well if they don’t bother then I won’t bother buying their product Smile


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#10
Ideally there would be a standard way of presenting information on PAR, Lumens and the like but then I guess that clears the field for the company who comes out top of the table.

Juwel present their Lumen for the Multilux and Heliolux in a different way. They state a number for the Multilux (around 6000) for the RIO 350 size) and in the case of the Helialux, they give the figure as 147 Lumens per Watt/white LEDs. I can't see where they show the number of white light LED's but if you take the wattage of the RIO 350 size unit it's 147 x 60 which equals over 8000 Lumens. But some of the LED's are coloured and I don't know how many are white.
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