Active Air-Timer

Marsoni

M251S

$123.59

Get it in 3 business days with 1 day shipping. Friday, May 29

Active Air-TimerDeliver growth boosting CO2 with our user friendly, easy to operate system. With its programmable timer, it will automatically maintain ideal CO2 levels for optimum growth. For small to medium size areas, select the COSYS; for larger than 10' x 10' areas, select the COSYS20. To use Hydrofarm's CO2 Flow Rate Calculator, click HERE NOTE: Current COSYS & COSYS20 now come equipped with a black rubber O ring that has replaced the white plastic washer.

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Your Active Air-Timer orders ship within 1-2 business days.

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Standard: 3-7 business days
Fast: 2-3 business days
Express: 1-2 business days

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Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
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Great sunscreen and when applied liberally my face doesn't get burnt. That has always been a problem with my skin all my life so I'm happy for that sort of coverage. The formula is a little greasy and there is a white caste but I use it to my advantage as it dims the red spots on my face and brightens my under eye. I try not to leave the house without applying.

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Reviewed in the United States on September 26, 2025

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Kelly

Birmingham, US

★★★★★ 5

Smooth sunscreen

Style: SPF 50, Size: 5 Fl Oz (Pack of 1)

Great for mature skin. Not easy finding something for mature skin that doesn’t cake or flake off. Moisturizing. I will buy again !

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Reviewed in the United States on April 28, 2026

Verified Purchase

Sarahshaw

Grantham, US

★★★★★ 5

Very glowy

Style: SPF 50, Size: 5 Fl Oz (Pack of 1), Style: SPF 50, Size: 5 Fl Oz (Pack of 1)

I just opened this to try it so I can't speak on if it breaks me out but the expiration date is good it doesn't expire until next summer. It's not thick at all very liquid actually but not a messy. I skipped moisturizer today to see how the hydration will be. I have severe dry skin so we will see. Very oily, glowy, moisturizing. I used it on my face and arms. It left a beautiful glow on my face so we will see how long it's takes to soak in. No strong smell which is nice and it's a large bottle!

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Reviewed in the United States on May 25, 2026

Verified Purchase

Michael Hardy

Belleville, US

★★★★★ 5

Sunscreen

Style: SPF 50, Size: 5 Fl Oz (Pack of 1)

Good product

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Reviewed in the United States on May 30, 2026