Red Sea Reefer-S Peninsula 700 G2+ and G3 Custom Polycarbonate Aquarium Screen Top Lid

A custom polycarbonate aquarium screen top lid for the Red Sea Reefer-S Peninsula 700 G2+ and G3 solves one of the most persistent problems in peninsula reefkeeping: keeping fish in, letting light and air through, and doing it without the warping, sagging, and salt creep that plague glass covers. If you have been searching for a lid built specifically for this tank rather than a generic mesh kit, this is the product page you need. Canada Aquarist builds each top to order, ships across Canada, and cuts polycarbonate panels that fit the exact internal dimensions of the Reefer-S Peninsula 700 in both G2+ and G3 generations.

Why the Reefer-S Peninsula 700 Needs a Purpose-Built Lid

The Peninsula 700 is a three-sided display tank. That design choice is beautiful in a living room and awkward for off-the-shelf covers, because the tank has an exposed viewing pane on three sides and a rear overflow section that generic lids never account for. A lid that overhangs the front glass ruins the clean rimless silhouette.

Jumping fish are the other half of the problem. Wrasses, firefish, gobies, and many anthias species are notorious for carpet surfing, and a peninsula tank with an open top gives them a long, unobstructed runway. A fitted screen top removes that risk without sealing the tank.

Polycarbonate Versus Glass and Mesh

Glass covers are heavy, trap heat, block a meaningful share of usable light, and need constant wiping. Standard mesh kits breathe well but flex, sag over long spans, and offer limited protection against evaporation.

Polycarbonate sits between the two. It is strong for its weight, resists impact far better than acrylic, and can be cut and framed to match a specific tank footprint. The trade-off is that polycarbonate scratches more easily than glass, so it needs careful handling during cleaning. For most peninsula owners, that is a fair exchange for a lid that actually fits.

What Makes This Screen Top Lid Fit the G2+ and G3

Red Sea revised the Reefer-S Peninsula platform across generations, and small dimensional changes matter when you are cutting a rigid panel. This lid is produced in two fitments so you order the version that matches your tank rather than forcing a near-fit.

Fitment Details for Both Generations

Each top is cut to the internal glass dimensions of the Peninsula 700 and profiled to clear the rear overflow and return plumbing. The frame sits on the tank rim rather than inside it, which keeps the lid removable in seconds and avoids trapping moisture against the silicone. Because the panel is framed, it holds its shape across the full span instead of bowing in the middle the way unsupported mesh does.

Materials and Construction

The frame is lightweight and corrosion-resistant, and the infill is clear polycarbonate with ventilation openings that allow gas exchange and heat escape. Cutouts can be positioned to suit your lighting mounts, feed doors, and probe holders. Light transmission stays high, so you are not paying for a premium reef light and then filtering its output through a cloudy cover.

If you want to compare this lid against the rest of the range, browse the full aquarium supplies online store to see how it sits alongside other Red Sea accessories and fittings.

Key Benefits for Canadian Reef Keepers

Canadian hobbyists deal with dry winter air and wide seasonal humidity swings. A fitted lid slows evaporation, which means less top-off water demand, more stable salinity, and fewer surprises when you are away for a weekend.

A few practical advantages stand out:

• Fish containment. A secure screen top dramatically reduces the chance of losing livestock to jumping.
• Stable temperature and salinity. Reduced evaporation keeps parameters steadier between water changes.
• Less salt creep. Fewer splashes and less airborne moisture means less crust on nearby surfaces and equipment.
• Better light efficiency. Clear polycarbonate transmits light well while keeping debris and dust out of the water column.
• Clean aesthetics. The low-profile frame preserves the rimless look the Peninsula series is known for.

These are the same reasons reefers treat a quality lid as an aquarium maintenance product rather than an afterthought. It reduces weekly labour, and that matters more than most upgrades.

Ordering, Shipping, and What to Expect

Every lid is made to order, so confirm your generation and tank model before checkout. Measure your tank’s internal rim if you are at all unsure, and note any lighting arms or mounting brackets that need clearance.

Shipping is available across Canada, including remote and rural addresses. Because the lid is a made-to-fit item, allow production time before dispatch, and inspect the panel on arrival for transit damage before installation. Polycarbonate ships well when packaged correctly, but it is worth a two-minute check.

Installation and Care

Installation takes minutes and requires no drilling or permanent modification. Set the frame on the rim, confirm clearance around the overflow and any equipment, and adjust the panel position until it sits flat.

For cleaning, use a soft cloth and lukewarm water. Avoid abrasive pads, ammonia-based cleaners, and dry wiping, all of which dull polycarbonate over time. Rinse salt residue rather than scrubbing it, and the panel will stay clear for years.

Who This Lid Is For

This product suits three groups especially well. First, peninsula owners running open-top tanks who have already lost a fish and want to close that gap. Second, reefers using high-output LED fixtures who want evaporation control without sacrificing spectrum. Third, anyone assembling a complete system who would rather buy one correct part than modify a universal kit.

It is less suited to freshwater setups with different rim geometry, and it is not a substitute for a proper sump cover or equipment cabinet.

Building out the rest of your system? Pair this lid with compatible aquarium equipment online from the same supplier so your fitment, plumbing, and lighting all work together from day one.

Frequently Asked Questions

Will this lid fit both the G2+ and the G3 Peninsula 700?

Yes, provided you select the correct generation at checkout. The two versions are cut to slightly different dimensions, so confirm your model before ordering.

Does a polycarbonate lid reduce light for corals?

Clear polycarbonate transmits the majority of usable light. Some reduction is unavoidable with any cover, but a clean panel has far less impact than glass that has accumulated salt film.

Can I cut the panel myself for extra cutouts?

Minor adjustments are possible with the right tools, but cutting polycarbonate risks cracking and voids the fit guarantee. Request custom cutouts at the time of order instead.

How much does it reduce evaporation?

It meaningfully slows evaporation compared with an open top, though the exact figure depends on your room temperature, humidity, and water surface agitation. Expect less top-off demand and steadier salinity.

Is this lid suitable for a rimless peninsula tank?

Yes. The frame rests on the rim without clamping, clips, or drilling, so the rimless profile stays intact.

Do you ship across Canada?

Yes. Lids are shipped Canada-wide, including rural and remote regions, though made-to-order items require production time before dispatch.