Soft Quad 5l – ceramic cartridge lowers the pH
Soft Quad 5 l ceramic filter media that lowers and stabilises pH to about 6–7. Intended for planted, shrimp…
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NEO MEDIA Soft Quad is a 5 l biological filter media for aquarists whose water pH runs too high. According to the manufacturer, it lowers pH and holds it at a stable level of about 6–7, which makes it suitable for systems where alkaline water is a limiting factor.
Why it matters
- Lowers pH rather than raising it: the manufacturer states that many popular ceramic media increase alkalinity and harden the water, whereas Soft Quad is designed to pull pH down and keep it there.
- Varied pore structure: the fibre production process produces pores of different sizes, which the manufacturer links to settling and fast development of several groups of nitrifying and other bacteria.
- Large claimed surface area: the manufacturer gives 3600 m²/l, which is the basis for its claim of strong biological filtration.
- Bacteria included: a separate sachet of nitrifying bacteria is supplied with the kit, to be mixed between the ceramic material in the filter to speed up the start-up.
Specifications
- Brand: NEO MEDIA
- Product symbol: PREMIUM NEO MEDIA - SOFT M QUAD 5L
- EAN: 8809702872029
- Volume: 5 l
- Weight: 8 kg
- Variant: SOFT (pH-lowering); the same brand also offers PURE (no pH change) and HARD (hardens water) variants
- Declared surface area: 3600 m²/l (manufacturer's figure)
What it works with
The manufacturer recommends Soft Quad for planted tanks, shrimp tanks, Malawi and Tanganyika cichlid tanks, and marine aquariums, including those with SPS corals. It is designed for filters in which it can be combined with the bacteria supplied in the kit, and its pH-lowering effect is intended for setups where the water is too alkaline.
Technical specification
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Frequently asked questions
The media lowers pH and is intended for tanks where the pH is too high, such as planted tanks, shrimp tanks, Malawi and Tanganyika cichlid tanks, and marine tanks with SPS corals. I can't confirm other tank types beyond those listed in the product information.
According to the manufacturer, it lowers the pH and holds it at a stable level of about 6 to 7. The manufacturer's pH claims are the only source for this figure.
The manufacturer states a surface area of 3600 m²/l, which is much higher than the figures it lists for other ceramic media, such as 270 m²/l for SIPORAX and 450 m²/l for Substrate PRO. The manufacturer says the measurements come from an independent lab, Quantachrome.
Yes, the bacteria come in a separate packet inside the box. They are nitrifying bacteria that look like small black balls, and you add them between the media in the filter to speed up the start-up.
According to the manufacturer, PURE does not change pH, SOFT softens the water, and HARD hardens it. This listing is for the SOFT QUAD 5-liter pack, and other versions and sizes are sold in separate offers.
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