Opti Clear glass 5 mm 30x30x30

Description

Opti Clear glass 5 mm 30x30x30 — Compact 30 cm cube in clear 5 mm glass for nano scapes and bettas

A 30 cm cube is the classic nano size: small enough for a desk or kitchen bench, large enough to hold a planted scape and a few fish with stable water. Opti Clear glass 5 mm 30x30x30 (SKU: OC27) is the 30 cm cube in the Absolute Opti Clear range, built from 5 mm glass with the clearer Opti Clear finish the range is named for. Measured on the outside, 30 × 30 × 30 cm gives a gross volume of 27 L, and with substrate and a gap below the rim the working volume is closer to 20 to 23 L. The square footprint lets the tank be viewed from the front and both sides, which suits aquascapes built to be seen in the round.

Five millimetre glass is a standard thickness for a cube of this height. Full, the water weighs a little over 20 kg, and with substrate and rock the setup can reach 30 kg, so a sturdy bench or cabinet is needed; any surface it sits on should be flat and level so the base glass is evenly supported, and a levelling mat beneath is worth adding. Equipment for this size is small: a hang-on or small internal filter rated around 100 to 150 L/h, a 25 W heater for tropical fish, and a compact LED. A cube this size suits a single betta, a colony of cherry shrimp, or a small school of nano fish such as chili rasboras. The Opti Clear range also includes 35 cm (OC42) and 40 cm (OC64) cubes and 60 cm (OC35) and 90 cm (OC60) tanks.

Usage & Application

When to Use

• Nano aquascapes: A cube for Iwagumi, moss and small rock layouts.
• Betta tanks: About 20 L of usable volume for a single betta.
• Shrimp colonies: Neocaridina and other small invertebrates.
• Desks and benches: A 30 cm square footprint for tight spaces.

Installation & Setup Guide

• Level first: Place on a flat, level surface, ideally on a levelling mat.
• Leak test: Fill with water for a day before adding substrate.
• Size the equipment: Small filter, 25 W heater and a compact LED.
• Clean gently: Use a soft pad on the glass and keep grit away from the panels.

Product Specifications & Highlights

Key Features

• 30 cm cube: 27 L gross in a compact footprint.
• 5 mm glass: Standard thickness for this height.
• Opti Clear glass: The clearer glass the range is named for.
• Three viewing sides: Suits scapes viewed from any angle.
• Range of sizes: Part of a five-tank Opti Clear line.

Product Details

• Brand: Absolute (Australia)
• SKU: OC27
• Product Type: Freshwater Aquarium > Glass Cube Aquarium (Tank Only)
• Dimensions: 30 × 30 × 30 cm
• Glass Thickness: 5 mm
• Gross Volume: 27 L (calculated from outside dimensions)
• Filled Water Weight: A little over 20 kg plus substrate and decor
• Other Sizes: 35 × 35 × 35 cm (OC42); 40 × 40 × 40 cm (OC64); 60 × 24 × 24 cm (OC35); 90 × 26 × 26 cm (OC60)
• Target Environment: Freshwater nano, betta and shrimp aquariums