🎃 Come & Join the Team

Your cart

Your cart is empty

Continue shopping
AI Prime Flex Arm - 12 Inch - Charterhouse Aquatics
AI Prime Flex Arm - 12 Inch - Charterhouse Aquatics

AI Prime Flex Arm - 12 Inch

£39.99
4.9 (13)

Found a better price?

Tell us where and we will do our best to match it!

For instant approval, we check that:
  • The link is from a recognised UK retailer
  • It is the identical product and variant
  • The retailer clearly shows it as in stock
  • Marketplace and third-party seller listings, such as eBay, are not eligible for instant approval
Tax included. Shipping calculated at checkout.
Black
Friday Black Friday is coming: up to 30% off Starts Friday 20 November. Register for early access →
  Earn 39 Charterhouse Points with this purchase.

Complete your setup

Questions about Freshwater Lighting

What type of lighting is best for a freshwater aquarium?
The best lighting depends on your setup. For fish-only tanks, a basic LED or fluorescent light will suffice. For planted aquariums, you’ll need full-spectrum LED lighting that supports photosynthesis. Brands like Fluval, EcoTech, and Aquael offer excellent options for both beginners and advanced aquascapers.
How many hours a day should I keep my aquarium lights on?
For most freshwater aquariums, 6 to 10 hours per day is ideal. Low-tech tanks with fewer plants can stay closer to 6–8 hours, while high-tech planted setups may benefit from 8–10 hours. Using a timer ensures consistency and helps prevent algae overgrowth.
What is the ideal light spectrum for plant growth?
Plants thrive under full-spectrum lighting, especially in the 5000K to 7000K range, which mimics natural daylight. Look for lights with good red and blue spectral peaks to support healthy photosynthesis, leaf development, and coloration.
Do I need special lighting for low-light plants like Anubias or Java Fern?
No special lighting is needed—low- to medium-intensity LED lights are usually sufficient. These plants are very forgiving and thrive in setups without intense lighting or CO₂ injection.

Thoughtfully paired

Add the products that make sense for your aquarium.

Selected total

Suggested products for this setup.

Make more of your setup

The parts, collections and advice that help you get the most from your setup.

AI Lighting Related collection AI Lighting Charterhouse Aquatics stocks AI aquarium lighting, including AI Prime, Hydra and Blade LED lights, flex arms and mounting brackets. Aqua Illuminati... Explore the range → AI Prime Accessories Related collection AI Prime Accessories The AI Prime 16HD accessories include a versatile mounting arm, offering multiple adjustment points to securely attach the lighting system above th... Explore the range →
Coming soon

Black Friday is coming

Register for early access to up to 30% off skimmers, lighting, pumps and more. Starts Friday 20 November.

Get early access

Reviews

Reassuring to use an operator with tracked named-day delivery, exactly what you want when dealing with glass aquariums. Great range, great prices.

Tim England

Tim England

★ ★ ★ ★ ★

24hr delivery of a pallet, for a complete marine aquarium. And two days before Christmas. No picking errors, best pricing and then great service with hour slot from UPN Pallet Network. Impressive!

Steve Lesson

Steve Lesson

★ ★ ★ ★ ★

Super happy with the tank, no issues whatsoever. The delivery was super fast too. (On the day of the delivery the delivery driver was absolutely amazing btw) Honestly cannot recommend enough 👌

Jonas Wolf

Jonas Wolf

★ ★ ★ ★ ★

Nice searchable website, plenty of stock, reasonably priced next day delivery, well packaged. Slightly more detail would have been nice as I bought 32mm thinking that was the external diameter but I suspect most people buying these items would know that. :)

Jake

Jake

★ ★ ★ ★ ★

This was actually my first time ordering something from them wasn’t sure on how long I would get it said two days, but literally I ordered it and it came the next day. Packaging was amazing. Didn’t even pay next day delivery and I got the next day If you’re reading my review, give them a try. They don’t disappoint.

AJ

AJ

★ ★ ★ ★ ★

Such a great service. Bought a fish tank Ciano emotions 150 Pro and it's arrived very well packed just 2 days after purchase. After 2 weeks i had an issue with light power supply which has been replaced straight away after I reported that to customer service. They look afyer customers and always replied very quickly if you have any problem. Strongly recommended!!!

Mr NotYour Business

Mr NotYour Business

★ ★ ★ ★ ★

Received my tank on Friday the 13th absolutely perfect driver was really really good dropped it right outside my little doorstep because it was on the path. Very very pleased with my purchase tank is looking absolutely fantastic. Will definitely use you again absolutely brilliant thank you.

Alan Ogden

Alan Ogden

★ ★ ★ ★ ★

Just received another delivery from Charterhouse aquatics, this time salt and frozen food: best price, all info I needed and free delivery that is quick and quality. Keep up the good work. And I love the reward scheme too!

Joyce Maturana Ferres

Joyce Maturana Ferres

★ ★ ★ ★ ★

CHARTERHOUSE REWARDS

A little thank you, every time.

Earn points when you shop, then turn them into money off at checkout.

Points with every eligible purchase8 stamps. 10% off.

COLLECT POINTS

Checking today’s rate…

Earn automatically on eligible product spend after discounts, excluding delivery.

SPEND POINTS

Checking today’s rate…

Switch on your points at checkout to save on eligible products.

Normal value: 100 points = £1 off. Flash offers can increase this.

Finding your rewards…

How to earn and spend your points

01

1. Shop and earn points

Earn 1 point for every £1 of eligible product spend after discounts, excluding delivery.

02

2. Use your points at checkout

Sign in at checkout and switch on “Use my points”. Your available points become money off automatically—no voucher to claim. Savings cover eligible products only; any points you cannot use stay in your balance.

03

3. Get more with flash offers

Watch for flash offers with double or triple points, or extra value when you spend them.

YOUR STAMP CARD

Eight stamps. One lovely thank you.

Each order with £250 or more in products after discounts, excluding delivery, earns one stamp. Fill all 8 slots to unlock a 10% off code, valid for 365 days. Use it alongside your points.

Sign in to see how close you are to your next reward.

Good to know

Why are some points pending?

Purchase points have an approval period before they become available. Your balance shows available points separately from pending points.

How long do my points last?

When points expiry applies, your balance stays valid for 365 days from qualifying rewards activity. Earning eligible rewards, redeeming points or a balance adjustment renews that window. Simply visiting the shop does not renew it.

Can I use points with my stamp reward?

Yes. Add your 10% stamp reward code at checkout and switch on your points. Your final saving depends on the eligible product total and any other discount restrictions.

What happens if I return something?

Earned points are adjusted for returns. Points used on refunded products are restored proportionally. If a refund takes a qualifying order below £250, its stamp is removed.

Start typing to search.