Hello UKAPS readers! I guess it's time for me to start a journal of a 20L Nano Tank I built for my (then) 5-year-old daughter Liza. Thanks to Paulo for directing me to this forum and his encouragement for starting this. Images after rescape of this tank are to be found on page 14. This is the most recent picture of the tank (02.03.2010): ---- OK, so I launched it on June 16, 2008. It is a 35 x 24 x 24 cm size Tetra tank. It was a "complete setup" but I only kept the tank and the original compact tube. Filtration: I am using an Eheim Classic 2211 external filter. It has a volume of 1L and an on-paper max Flow-Rate of 300 lph. Cal Aqua glass nano lily pipe set used for filter inflow/outflow, got it from AquaEssentials UK. Lighting: the tank came with a 11W Compact Tube (9000K white). As that was far from enough I installed an additional 6W Osram T5 tube (4100K yellow) with a Juwel reflector. They're on for 9 hours/day 2PM-11PM, using a digital timer. Water Heating/Cooling: Hydor ETH 200 external heater with 12 mm int. hose. A small DIY mounted 12V 4x4cm fan - running on 6V for lower noise-levels - cools the water surface and decreases water temperature by about 2-3Â° C. Carbon Dioxide: Pressurized CO2 system with Dennerle Crystal-Line (glass) drop checker, bubble counter (currently set for 16-20 bubbles/minute) and diffusor. The glass check-valve will be replaced with a Dennerle Profi Line one soon (due to minor leaks). I use a 350g CO2 bottle from Aqua Light and a Papillon pressure reducer with a working pressure of 2 bars. The Dennerle solenoid valve switches on - using a second digital timer - 30 minutes before the lights and turns of the CO2 flow 10 minutes before lights go off. CO2 level is around 20 mg/l. Plant Fertilizing: I dose 10 drops (0.5 ml) of Easy Carbo and 6 drpos of Tropica Plant Nutrition+ (0.3 ml) every day, doing weekly 30-50% water changes. I use Easy Life - Easy Life for tap-water treatment. Substrate/Deco.: 1cm thick Dennerle FloreDepot and Sera Substrate mix, with 5 kg (4 cm thick) Africa Black Gravel on top. The background is black paper. Water Parameters: PH 7.2, KH 9, GH 16, Nitrate 10 mg/l, Nitrite 0, Ammonia 0, Temp.: 26-28Â° C. I know the KH, GH and PH are pretty high but I did not want to get into the RO (or distilled) water business just yet, let's see if I can get by without. Plants: Glossostigma Elatinoides (FG). Hemianthus Callittrichoidus (FG - only a small spot for testing purposes), Hemianthus micranthemoides (mid-ground transition), Cladophora aegraglopila (cannot really see that, it is in the BG), Cryptocoryne x willisii, Microsorum pteropus 'WindelÃ¸v' (on rock), Microsorum pteropus (Java Fern - on rock), Rotala Macranda (Red stem plant in BG). Fish/Invertebrates: Stocking rule - Maximum of 5 cm / 4.55 liter = 22 cm in total. 3x Otocinclus affinis (Oto, 2F, 1M), 6x Boraras Brigittae (Dwarf Rasbora, 3F, 3M), 5x Neocaridina Heteropoda (Cherry Shrimp, 4F, 1M), 1x Corydoras Paleatus (Pepper Cory - guest only). Folks, please appreciate it when you have a well-equipped, competitively priced LFS near you. I usually drive 300 kilometers to Austria - thats about 4 hours - for most of the stuff, including fish and plants. Just never seem to be getting exactly what I want locally. ----------------------------------------------- History: I've been fighting filamentous algae, green spot algae, diatoms and recently staghorn algae too. After the fishless cycle I heavily overstocked with bigger fish not really suitable for a tank like this. Who new? :? Gave away most of the original stem plants too, except Rotala Macranda (red). Having the Hemianthus micranthemoides in a Nano Tank FG was a mistake too, so I moved it to be a mid-ground plant. I grouped the rocks together as they started to disappear. I still need to remove the white surface film every day - I want to do something about that. My original blog with further details can be found here. Day 0: Day 2: Day 40: Day 75: Day 76 (after planting the Glosso): Day 82 Thanks for reading this. I'd really appreciate your comments. B.