What are the PAR ratings for this?

Finnex's webpage has a chart that shows the PAR rating for each of their models. Note that the ratings are for the 48-inch model and were taken at 14 inches through open air. It doesn't say whether these ratings are maximum or average (a distinction I saw on another manufacturer's models).

I'm usually only home at later hours toward the evening. Will this be bright enough for me to enjoy my fish at night? I'm worried it will be too dark.

You can customize lighting from bright-full-on to completely dark for eight different 3-hour time blocks. So, if you work the late shift, you can set your light to come on at 6PM or 9PM and go off or go dim at midnight (12AM) or 3AM - totally customizable. I love that I can bring the lights on dim first 3 hours, then lighter, then full on, then dimmer, then off so I don't startle my fish, LOL. I also like that you can adjust the number of white, red, green and blue led bulbs that come on, so you can have a reddish, bluish, or greenish hue to the lighting at beginning or end of your day, then full brightness for two 3-hour periods (6 hours total for live plants).

Q: My tank is 31,5" Will the 30” work?

yes the brackets extend out past the light like 2" on each side

does the 24/7 cycle put out enough light to grow some low/medium light plants well? I have a 29G that is 18.5" tall tank.

Yes. You may actually need to decrease the intensity. I have a 29g as well and I have it on for 6 hours at lowered intensity. Plants are doing well and I'm not getting algae.

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Description

🌅 Illuminate your aquatic world with smart, customizable brilliance!

AUTOMATED 24 7 CYCLE - Set your custom sunrise to sunset routine once and enjoy hands-free, natural aquarium lighting all day long.
MULTI MODE WEATHER EFFECTS - Switch between Cloudy, Thunderstorm, Sunset, and Starry Moon Night modes to create immersive aquatic atmospheres.
SLEEK SLIM ALUMINUM DESIGN - Minimalist 20-inch fixture blends seamlessly with modern aquariums while ensuring durability and heat dissipation.
DYNAMIC FULL SPECTRUM LIGHTING - Harness the power of 8,000K Daylight plus Red, Blue & Green LEDs for vibrant plant growth and stunning fish display.
INTUITIVE REMOTE SENSOR CONTROL - Easily customize and save up to 4 lighting presets with IR remote and built-in indicator sensor for precise adjustments.

The Finnex Planted Plus True 24/7 + HLC Aquarium LED Light is a 20-inch, slim aluminum fixture featuring a unique 4-bulb cluster (Daylight, Red, Blue, Green LEDs) designed for optimal plant growth and fish visibility. It offers fully customizable 24/7 lighting cycles with sunrise and sunset modes, four preset weather effects controlled via IR remote, and built-in sensors for easy operation. This energy-efficient 16.5W LED light is perfect for indoor planted aquariums seeking a natural, dynamic lighting experience.

Specifications

ASIN	B07SBL28J3
ASIN	B07SBL28J3
Additional Features	Planted Spectrum, Customizable Color Changing Sunrise & Sunset
Age Range Description	All Life Stages
Base Material	Aluminum
Batteries	2 AAA batteries required. (included)
Best Sellers Rank	#57,149 in Pet Supplies ( See Top 100 in Pet Supplies ) #231 in Aquarium Lights
Brand Name	Finnex
Bulb Base	E27
Bulb Shape Size	A19
Color	Sleek Silver
Connectivity Protocol	IR
Connectivity Technology	IR
Control Method	Remote
Controller Type	Remote Control
Customer Reviews	4.5 4.5 out of 5 stars (1,452)
Date First Available	May 24, 2019
Finish Types	Polished
Global Trade Identification Number	00856521005952
Included Components	LED Body, Remote, 2 Clear Legs
Indoor Outdoor Usage	Indoor
Installation Type	built-in
Is Waterproof	True
Item Dimensions D x W x H	2"D x 20"W x 1"H
Item Type Name	Aquarium LED
Item Weight	16 ounces
Item model number	HLC-20
Lamp Type	LED Aquarium Light
Light Source Type	LED
Lighting Method	LED
Manufacturer	Finnex
Manufacturer	Finnex
Manufacturer Warranty Description	180 day manufacturer.
Material Type	Aluminum
Model Number	HLC-20
Mounting Type	Desktop" or "Tabletop
Number of Items	1
Number of Light Sources	4
Number of Pieces	2
Power Source	Corded Electric
Product Dimensions	2 x 20 x 1 inches; 1 pounds
Recommended Uses For Product	Plant Growth
Room Type	Aquarium
Shade Color	Multicolor
Shade Height	1 inches
Shade Material	Aluminum
Shape	rectangular prism
Specific Uses For Product	Aquarium
Style Name	Minimalist
Switch Type	Remote
UPC	856521005952
Unit Count	1 Count
Water Resistance Level	Not Water Resistant
Wattage	16.5 watts

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