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Description
Neptune Flow Sensor - 1/2 InchNeptune Flow Sensor 1 2 Inch Overview The Neptune Systems FS 50 Flow Sensor is designed to be used with the Flow Monitoring Module (FMM). Usually used with aquarium accessories like reactors, carbon GFO filters, etc., this flow sensor can be placed in line with the flow on any pipe, connected to the FMM, and communicate to your Apex the flow rate of water through that pipe. The flow sensor itself uses BSPP threads so for North American customers we
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- Free Standard Shipping on $100+ Orders to the USA.
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- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.5 ★★★★★
Based on 1847 reviews
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Product Reviews
★★★★★ 5
Great Buy
Style: Dress, Color: Two-Tone Gold/ Blue Dial, Style: Dress, Color: Two-Tone Gold/ Blue Dial
Stunning watch!! Purchased for my boyfriend for his birthday. He is a bigger guy with a larger arm/wrist so the size of this watch looks great on him. He receives a ton of compliments on it, and it still catches my eye every time he wears it. Decent weight without being too heavy (he reports). Perfect to wear as a daily watch or dress up with
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 6, 2026
★★★★★ 5
Quality and “Executive” Look
Style: Dress, Color: Two-Tone Gold/ Blue Dial
Quality you come to expect from Citizen. Looks and feels like a more expensive watch without busting your wallet. I get the most compliments on this watch over any other I own!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 18, 2025
★★★★★ 5
For the money you spend, you can't beat it.
Style: Dress, Color: Two-Tone Gold/ Blue Dial
Citizen has the best watches for the money you spend. Can't beat the prices.
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Reviewed in the United States on May 30, 2026
★★★★★ 5
It all good
Style: Dress, Color: Gold Tone Stainless Steel
Very nice watch love it and the price
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Reviewed in the United States on June 6, 2026
★★★★★ 5
Good
Style: Dress, Color: Gold Tone Stainless Steel
the nicest watch I've used recently
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Reviewed in the United States on April 5, 2026
