The Rena air pumps offer you power, silence and versatility in one attractive package. These pumps maintain optimum flow, even in the deepest of aquariums and are so quiet that they can be used in any room in the house – even the bedroom! EXTREMELY QUIET Unique construction of the Rena Air pumps reduces vibrations and residual noises : less than 30 dB at a distance of 1 meter. UNIQUE DESIGN Fitting of base to casing guarantees soundproofing. Special extension chambers (Rena Air 200 to 400) absorb vibrations and reduce noise from valves. This Pond Aeration Pump Is Good For Ponds Around 150 Gallons. Not recommended for outside use, install in shed or inclosed building near pond. Comes with free airstone & 5' of 3/16" clear silicone tubing. RenaAir400 Most Orders Shipped Out Same Day! Premier Ponds LLC pondinfo@premierponds.com U.S.A. Copyright © 1999 - 2007 Premier Ponds LLC, North Salem, New York. All rights reserved. Thermo-Pond Heater 3.0, Aquascape Designs Pond Kits, ScareCrow Sprinkler, Nursery Pro Micro Pond Kits, AquaClearer, Microbe-Lift, Great Blue Heron Decoy, Pond Liners, Thermo Pond Heater & Deicer, Premium Koi Food, Select Koi, Butterfly Koi, Pond Aeration Pumps, Flexible PVC Piping, BioFalls, Skimmer, Aquascape Pumps, Cat Stop!, Animal Control Products, Pond Netting.