One of the cheapest, most popular and yet beautiful fish that every aquarist is familiar with, is the Guppy ( Poecilia reticulata ), also known as the millionfish. Belonging to the Poecilidae family, Guppy is a small fish with the females growing to 4–6 centimetres long and the males 2½–3½ centimetres long. This fish is live-bearing and are often bred for their natural colour. Breeding Guppy is very easy. Courtship starts when males spread their fins and curve their body in front of the females. The male will swim up against the female to mate. Once the female is inseminated, a dark area near the anus, known as the gravid spot, will enlarge and darken. The gestation period of Guppy is between 21 – 30 days which varies depending on the water temperature. Female Guppy drops the fry which are ready swimming, eating and capable of fending for themselves. The number of fry that a female Guppy can drop is between 2 – 100. As in other Poecilia family members, the females can retain the male sperm after a single mate and hence able to give birth many times in the absence of males. The fry takes about one to two months to reach maturity and Guppy can live up to two years on average. Guppy feeds incredibily on anything, even with a small stomach and mouth. Its diet may consist of lettuce, bloodworms, tubifex worms, flakes, mosquito larvae etc. Feeding Guppy at least 3 times a day will keep the Guppy happy. Guppy fares well in water temperatures of 23-24 °C (82-84°F) but they can also live in water between 19.0 – 29.0°C (69 – 86 °F). Guppy is a community fish and will live happily with a group of their own. Due to their small size, they are often targets of prey by the larger fish

Singapore formulated phosphate (PO4) for marine aquarium is launched into the local market, and it is “ goodbye! PO4 “. goodbye! PO4  is a liquid phosphate remover which operates hand in hand with a protein skimmer or a mechanical filter. It works by binding active phosphate molecules, turning them into inert particulates which become unusable for further biological processes. That means it is unavailable as a nutrient for algae growth and will not affect corals’ well being. The particulate suspension is subsequently removed from the aquarium system by protein skimming and/or through the mechanical filter. Understanding Phosphate (PO4): Phosphorous is an essential element in all living cells, performing several important functions such as energising muscle contraction, nerve signal transfer, DNA replication, proteins manufacture etc. However, while phosphate is necessary for life, elevated levels of phosphate in a reef aquarium are known to impede calcification in corals and calcareous organisms. Growth of corals and invertebrates become retarded even when major and minor elements such as carbonate, calcium, magnesium, strontium, iodine are maintained at optimum levels. Phosphate is well known as an efficient nutrient for nuisance algae. In the aquarium, phosphates tend to accumulate as a result of organic decomposition, decaying plant matters and food waste. The average phosphate concentration in seawater is about 0.06ppm. In the coral reef, the concentration of dissolved phosphate is significantly lower at about 0.015ppm. Maintaining phosphate level in a reef aquarium at the desired level, generally