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The last photo of the old one, before I’ve removed all plants and fish

old tank 70l 2010.01.31

new tank 110l 2010.02.02

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fertiliser dosing pump for aquarium – More DIY How To Projects

The tank after restart.

Foreground plants: Glosstigma elatonides, Sagittaria subulata; Middle (from left): Bacopa caroliniana, Rotala macandra, Bacopa monnieri; Background: Heteranthera zosterifolia, Mayaca fluviatilis, Ludwigia repens ‘Rubin’, Cardamine lyrata. Some crypts in shade of ludwigia, and temporary Java moss on bog wood. future: Hemianthus micranthemoides and Rotala wallichii & Ludwigia Inclinata instead Star Grass.

Some Tank Parameters: 70l; ph 6.9; CO2 from 500g bottle DIY difuser, light 3 X 15W Hagen Power Glo, Arcadia Fresh water, Philips Aquarelle 10K. Fertilization PMDD (250ml water+ 7.5g KNO3+11.5g K2SO4+11.5g MgNO3+7.5g Trace Mix)+Seachem Trace+Tropica PN+. Water changes 50%/week RO+tap water 1:1.

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Lack of CO2 that is the secondary limiting factor (the light of course is primary) in photosynthesis and hence plant growth in planted aquarium. Following opinion of some more experienced people, is the most common reason of overgrowth algae in planted tank. Basically the race for micro/macro elements, in non optimal conditions, plants will lose as a more complicated organisms than algae. The cheapest and most accurate source of carbon dioxide is high pressure bottle with pressure reducer (might be solenoid valve and even eletronic pH meter).  I’ve found couple of HowTo’s on Internet and decided to do by myself  CO2 dissolver. On Instructables.com you can find my first instructable “CO2 mixer for planted aquarium” . In my opinion is one of the most efficient and accurate method.

Enjoy.

PDF Version: CO2 mixer for planted aquarium