Is one light enough for me?...

EA James

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Hi everyone, this my aquarium.
Currently has 2 20W 4000k led tubes. Plants are mainly various swords, some anubias, ferns and vallis.
Will one light be sufficient for growth?
I’m looking at getting rid of one to replace it with a blue light for the evening.
I’d also like to be able to dim the white light if possible?
Any help will be appreciated
Thanks, James
upload_2019-9-19_13-42-31.jpeg
 

Edvet

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Sorry but if this works well why do you want blue light?? ( longer light period gives algae risk as they can do with far less light)
If you want to see the tank in the evening shift lighting hours? My lights go on at 2 in the afternoon and are on till 10.
 

EA James

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Staines-upon-Thames
Sorry but if this works well why do you want blue light?? ( longer light period gives algae risk as they can do with far less light)
If you want to see the tank in the evening shift lighting hours? My lights go on at 2 in the afternoon and are on till 10.
My old 60 litre tank had 4 white light setting and 2 blue. I used 1 white and 2 blue and it looked really nice.
I’d like that on my new tank just for a couple of hours in the evening
Lights at the moment are on a timer from 6pm till midnight
 

zozo

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Just leave it as is and use 1 small IP68 (waterproof) RGB spotlight.. Mount it somewhere in the corner of the hood and beam it diagonaly into the tank and dim it sufficiently.

Something like this with remote control to dim it and or change the color.
https://www.ebay.com/itm/Underwater...hash=item469d328f20:m:m4MKb1wlbeZzZG7GHaETkDw

It will give a lot more realistic effect, with casted shadows and shimmer, than 1 intire strip illuminating the complete tank in blue. And i also wouldn't go for blue :) But for a dimmed cool white, this contains blue enough and looks much closer to moonlight if its dim enough..

You could hook it to a timer and the internal driver has an eprom, it always will remand and come back on in previous setting.
 

EA James

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Joined
22 Jul 2019
Messages
260
Location
Staines-upon-Thames
Just leave it as is and use 1 small IP68 (waterproof) RGB spotlight.. Mount it somewhere in the corner of the hood and beam it diagonaly into the tank and dim it sufficiently.

Something like this with remote control to dim it and or change the color.
https://www.ebay.com/itm/Underwater...hash=item469d328f20:m:m4MKb1wlbeZzZG7GHaETkDw

It will give a lot more realistic effect, with casted shadows and shimmer, than 1 intire strip illuminating the complete tank in blue. And i also wouldn't go for blue :) But for a dimmed cool white, this contains blue enough and looks much closer to moonlight if its dim enough..

You could hook it to a timer and the internal driver has an eprom, it always will remand and come back on in previous setting.[/QUOTE
upload_2019-9-19_16-28-21.jpeg

This is my old tank with my preferred evening setting, I’d like to replicate this
Would your suggestion be similar?
Cheers
 

zozo

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If you have a flash light you can reproduce the looks of one spot light.. :) Than you can see how it looks, just the color and intensity might be different.
 
Last edited:

EA James

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Staines-upon-Thames
Sorry but if this works well why do you want blue light?? ( longer light period gives algae risk as they can do with far less light)
If you want to see the tank in the evening shift lighting hours? My lights go on at 2 in the afternoon and are on till 10.
In answer to a part of my question do you think one light will be ok for plant growth?
 

Edvet

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I don't know your lamps, so hard to say, but i have one 20W LED floodlight over a 50x50x50cm tank and it works for me ( it does get some daylight from above too)
 

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