The Planted Tank Forum banner

120 Gal Dutchy Freestyle - Now with 35% less water volume!

407761 Views 1923 Replies 214 Participants Last post by  Joeyvan172
So this is a journal for my new 120, which replaces my long running 75 gallon. For anyone who followed the previous tank, this one will be basically the same style with just a bigger footprint.

First planting, about 2 months ago.




Tank

48" x 24" x 24" Marineland 120 gal


CO2

GLA Grow 1 regulator, 10 lb tank.

DIY PVC reactor. Main pipe is 3" x 24"



CO2 cuts on 90 min before the lights, goes off 1 hour before. PH drops 1.1 by lights on, proceeds on down 1.3-1.4 at peak. Livestock are fine at this level, heavy flow and good surface agitation helps.


Filtration

Two canisters: 1 Aquatop CF 500, and 1 Hydor Pro 600

Measured flow combined is about 600 gph.

1 Koralia Nano 425 for added circulation

Both canisters have SunSun intakes with the skimmer

Left corner is the the Aquatop. Using a 1" outflow pipe to reduce velocity (the in-tank flow is crazy!)



Right corner is the Hydor. The CO2 runs inline with this one.





^also you can see my LED night lights, mounted on each end of the main fixture.

Substrate:

Black Diamond blasting sand


Lighting

6 bulb T5HO hydroponic unit

https://www.amazon.com/Agrobrite-Designer-FLP46-6-Tube-Fixture/dp/B002TJQ61W



Bulbs are front to back:

TrueLumen Flora
Agrobrite 6400K
Zoo-med Flora
Plantmax 3000K
ATI Purple
TrueLumen Flora

Fixture is 9" above the tank, PAR at the sub is around 120. Having lots of red bulbs help keep it down, not to mention awesome color rendition. PAR would be a lot higher at this distance with more 6500Ks, for example


Ferts

Macros 3x week
7.5 ppm KNO3
1.3 ppm K2PO4
3 ppm K2SO4 (for 6-7 total K)

Micros 3x week
.015 Fe from csmb
.02 ppm Fe dtpa

** Micros are more now because Im rolling my own instead of using csmb. Will update the amounts once I arrive at the sweet spot.

50%-60% water change every 6-7 days

Livestock

25 Harlequin Rasboras, will soon get this up to maybe 30 or so
6-7 otos
Trio of young German Blue Rams, just coming into their adult colors
10-12 Amano shrimp


Here's the latest rendition. Plant groups are no way shaped for height or footprints. Mainly just tentative placeholders of where things are going to be. Have lots of ideas to try, and open to any suggestions! :)




Detailed plant pics to follow....
1 - 6 of 6 Posts

· Registered
Joined
·
359 Posts
Here's the recipe per dose. Full strength adds .15 ppm Fe and then everything else you see. Ive been dosing around .12 3x week in most tanks, a couple are getting .1

Fe DTPA - .1
Fe Gluc- .05
Mn - .045
B - .037
Zn - .035
Cu - .0025
Mo - .0013
Ni - .0003

Current macros are 21/6/25 per week, divided in three equal doses.

I stopped adding urea and NH4 about a month ago. Long story but its all from KNO3 now

Im starting to hash out a plan for the Dutch. Will post an update soon

Thanks, very similar to your old 13.15 recipe I've been using for the last year


I see you're adding Fe Gluc in your micros recipe - what is your experience with it and what are the benefits?
 

· Registered
Joined
·
359 Posts
Gorgeous tank, Joe, and I can't imagine the time and effort that went into this beauty....congrats!

I just read the plant lineup here and had not heard of Rotala serpyllifolia before....looks like another one to add to the wish list...
 
1 - 6 of 6 Posts
Top