Abstract: A small animal living environment system formed from small animal enclosures fabricated from transparent thermoplastic material. The enclosures having a lid opening large enough to accommodate a human hand and ventilation openings of sufficient size and number to allow for air passage through the enclosure. The enclosures also have a plurality of through openings on the walls of the enclosure, for the passage of small animals therethrough and an attaching means formed at the opening passage for the attachment of tunnel tubes, and small animal living accessories. The attaching means is formed from a U shaped track system wherein an outside edge of the opening passage is formed into at least one U shaped channel on the lower portion of the opening passage, and tunnel tubes are formed with a protruding lip on the outside edge of the tube opening so that the lip may be securely fit into the channel of the U shaped track attaching means.

Abstract: A small animal living environment system formed from small animal enclosures fabricated from transparent thermoplastic material. The enclosures having a lid opening large enough to accommodate a human hand and ventilation openings of sufficient size and number to allow for air passage through the enclosure. The enclosures also have a plurality of through openings on the walls of the enclosure, for the passage of small animals therethrough and an attaching means formed at the opening passage for the attachment of tunnel tubes, and small animal living accessories. The attaching means is formed from a U shaped track system wherein an outside edge of the opening passage is formed into at least one U shaped channel on the lower portion of the opening passage, and tunnel tubes are formed with a protruding lip on the outside edge of the tube opening so that the lip may be securely fit into the channel of the U shaped track attaching means.

Abstract: A cleaning device adapted for use in cleaning the interior surface of the glass walls of an aquarium fish tank. The device allows for the interchange or replacement of cleaning elements to accommodate the cleaning of the various types of surface deposits which may be found on the interior glass of the aquarium, by removably attaching the cleaning element to the headpiece of the cleaning device. The preferred embodiment of the invention includes an elongated handle, a non-rusting glass scraper, rigid projections from the headpiece to hold the cleaning element in position during use, and a planter feature for pushing aquarium plants and air tubing under the bottom material in the aquarium.

Abstract: A rock-like decorative assembly including a plurality of irregularly shaped shells each having side walls and a top wall, the outer surfaces of all said shells being mottled, at least one, integral first connector means formed on the inside of the top wall of each of said shells, one integral second connector means formed on the outside of the top wall of said shells, said first and second connector means being mateable to connect juxtaposed shells into a rock-like formation.

Abstract: An immersible, floatable aquarium heater is provided, with universal mounting bracket which will accommodate both the old and new types of aquarium construction. The heater includes a sealing cap incorporating integrally the control knob spindle and the power line for the heater. The arrangement provides a triple seal to protect the vital heater controls from high humidity in the aquarium environment, with the seal preventing leakage in case of accidental submersion of the entire heater. The control knob of the heater includes a tamper-proof feature to avoid adjustments beyond a 10.degree. range, unless actually required.

Abstract: A new and improved aquarium fish net having an open, porous pocket defined by spaced, parallel side walls of relatively course mesh or large pore material joined by a continuous, seamless, front-bottom-rear wall of relatively fine mesh or very small pore material. The porous pocket is suspended from a vinyl covered wire frame, the ends of which are twisted together and supported in an elongated wooden handle.

Abstract: Disclosed herein is a modular aquarium apparatus generally comprising a watertight housing which suspends a glass thermometer safely therein. The housing includes a ballast chamber carrying a weight of predetermined characteristics sufficient to provide the housing with sufficient negative bouyancy such that the housing, without more, will float at the top of an aquarium with the lower portions of the housing submerged. With the addition of a special sinking sub-assembly carrying additional ballast the aforementioned thermometer housing may be converted into a sinkable housing for measuring temperatures at the bottom of the aquarium. Alternatively, the housing may be provided with a special cap and hanger arrangement for converting the housing into a hanging thermometer assembly adapted to be suspended from the upper wall portions of an aquarium tank.

Abstract: An aquarium thermometer is provided which may be selectively, horizontally positioned at a plurality of depths along a wall of an aquarium tank for comparing the temperatures at different levels to ascertain and to monitor temperature gradients in the tank. The thermometer assembly of the invention includes a water tight house having spaced ferrous components or magnets adjacent the opposite ends of the thermometer scale. A separate positioning handle, having similarly spaced, registerable magnets at its opposite ends, is adapted to cooperate with the thermometer housing on the wall, to cause the thermometer inside the tank to move correspondingly with the handle. The positioning handle and the thermometer housing may mount pairs of oppositely polarized magnets.

Abstract: A directional flow circulator is provided for aquariums for distributing heated water from the heater throughout the aquarium tank. The circulator is positioned concentrically with a heater and serves to collect and distribute heated water through a directional flow spout to the far reaches of the tank to avoid concentrated hot and cold spots in the aquarium tank. The circulator is configured to accommodate any length standard heater, and includes means to fix the circulator on the tank wall at the proper height for the length of the heater used.

Abstract: A gang valve assembly, constructed entirely of a thermosettable or thermoplastic resin material, for use in aquariums, is disclosed herein. The valve assembly may be comprised of any number of valves and may be assembled from injection molded modular elements derived from only a few basic molds. A hanger bracket for mounting the valve assembly from an aquarium wall is included.