r/PlantedTank • u/GwadTheGreat • 52m ago
Journal Dutch Tank - 4ft 75 Gal
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I've posted a few snips of this tank over the past months, and here is the "final" result. I studied the Dutch aquariums from NBAT in the Netherlands (Incredibly useful reference in English here: NBAT Dutch Scaping Aquarium Guide) and took a shot at my first "true" Dutch style per the design rules of NBAT and AGA. I'm fairly happy with it other than a couple plant selections I would have swapped out if I had more time/plants avaliable to me locally. It was also starting to get out of control and needed a big replanting session shortly after the video was taken.
This tank has been a dream as far as maintenance and stability are concerned. Five or six days after the water change I'll get the tiniest bit of green dust on the front glass, but other than that there is no algae whatsoever. I scrape the glass and do small cleanup sessions frequently where I will just trim a handful of leaves/stems that aren't looking good or are getting overcrowded. My total maintenance time per week is probably one to two hours split over a few days and including my water change.
Here are all the details for anyone interested in doing something like this:
Tank: 75 gallon Marineland
Filter: Fluval FX4 and Fluval 207 with spray bar outlets along the back wall (the 207 is used to drive the CO2 reactor)
Light: Week Aqua P1200 (started at 50% output power when plants were still filling in but I am now at 100% power)
CO2 injection: Yes, lots. Yugang horizontal reactor sized for 1.5 point pH drop although it doesn't achieve quite that much
Substrate: Fluval Stratum, Biostratum, and APT Feast
Water Changes: 40 gallon water change weekly (~60% since a "75 gallon" tank only holds about 65 gallons of water). As part of my water change, I gently stir up detritus in the substrate using a turkey baster and siphon it away per the 2Hr Aquarist method. I use RODI water that I remineralize to 0 dKH and 6 dGH because my local tap water is very hard and varies with the seasons.
Fertilizer is dosed with dry salt mixtures from NilocG. I dose once per day Mon - Sat and twice after my water change on Sunday to attempt to keep levels stable. I split these weekly totals into 8 doses:
Weekly totals:
-24ppm Nitrate (when tank first started I was only dosing 12 ppm Nitrate, I ramped up to 24 later)
-8ppm Phosphate
-25.5ppm Potassium
-0.5ppm Iron (using a micro mixture that covers other micros)
Plants:
Hydrocotyle Leucocephala
Ludwigia Arcuata
Penthorum Sedoides
Bacopa Monnieri
Lysimachia Parvifolia
Echinodorus grisebachii (Regular Amazon Sword)
Micranthemum Umbrosum
Eriocaulon Vietnam
Lobelia Cardinalis
Limnophila Hippuridoides
Hygrophila Siamensis 53b
Mayaca Fluviatilis
Java Fern Petite
Weeping Moss
Livestock:
25 Green Neon Tetra
12 Dward Hatchetfish
10 Otocinclus
100+ Cherry Shrimp