[APD] Simulating sunrise & sunset in Aquarium Lighting

["Saugata Banerjee" <saugatab at gmail_com>]

Hi! All,

I have a 90 g planted tank which has 210 watts of PL lights controlled by a
digital timer. Was wondering if it is possible to simulate day & night using
the same light. This would be better for the fishes as compared to all the
lights coming on at the same time & all of them getting switched off at the
same time.Is there any device available using which the lights can come on
slowly simulating sunrise and then swich off slowly simulating sunset?

Thanks is advance for your resposnes.

Regards,

Saugata
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