Rygh 300G build log

mprygh

New member
Yippee! Finally decided to take the plunge with a BIG tank. :celeb1:
Got the plan, approval from the wife, and everything.
The plan is to do it backwards, with the little pieces first, tank last.
The fiddly bits seem to take forever, and I don't want the pressure of a big empty tank sitting there waiting for me.


GENERAL OVERVIEW
This is the general plan.
Most of these items need a lot more detail of course. That will follow in time.
This will go SLOWLY. I am pretty busy, and not really in any hurry.
But it is real now. I have started on some of the pieces.
Some of the decisions below are not entirely standard, but power efficiency and a natural approach are important to me.
Almost everything will be DIY. I see that to be as much fun as the aquarium itself.

TANK SIZE: 8 foot, 300 Gallon
(Thanks to those that helped me make the size decision)
Length = 96" = 8'
Width = 30" = 2.5'
Height = 24" = 2'
Likely buy TRUVU Acrylic 300-W. Upgrade front to 3/4". Dual overflow.
Note that real calculated volume is more like 263 gallons.
Roughly 300 pounds
This is one of the few things I am buying. Needs to be perfect, and big heavy acrylic is tough.


FISH+REEF
This will be a combination fish/reef. Slightly more emphasis on the fish than on corals.
It will be a peaceful tank. No overly aggressive fish. All reef safe.
There will be a couple of large tangs. Exact TBD
Probably one large school of small fish. Dither-fish.
Quite a few small individual species, darting in/out of rock.
It will be a large random mixture of coral types/ SPS/LPS/softies.
Probably more softies. I like the motion.

LIGHTLY LOADED, LOTS OF SWIMMING ROOM, OPEN WATER DESIGN
This is a personal preference of mine.
I really do not like the look of a tank absolutely jam-packed with fish and coral.
So no expecations of winning tank of the month here.
I like an expanse of sand and a fair amount of simple open water.
That said, it will hardly be bare.
I do have the willpower (won't power) to keep it fairly lightly loaded.
As a bonus, it reduces maintenence and emergency problems hugely.
This does require moving a fair bit of live rock to sump.

AQUASCAPING
As above, it will be fairly open.
The concept is to have a center shallow shelf like area, and few pillar like formations on the ends.
The center shelf will have the hard corals, and be brighter/shallower.
About 3' wide or so. Sloping from sand very near front, up toward back, against the wall.
Hard corals will be higher in the water, so less lighting needs.
The pillars will have softer corals, and have caves/such for the fish.
Lots of swimming area for the fish.

LIGHTING
The concept is to be bright in the center of the tank, and less bright on each end, but not dark.
This focuses the intense lighting on the corals that need it.
This also is combined with the auqascaping to emphasize shallow center, deeper darker ends.
Should focus vision to center of the tank. Perhaps too much?
Lighting will be LED based. I am experienced in that.
It will be a bit less blue, and a bit yellower more natural color. I like that.
With LEDs, I can add really deep purple to make other colors pop.

FILTRATION
Filtration will be algae turf scrubber based. Good experience with that on my smaller tank.
Yes, no skimmer, no ozone, no filter socks, no denitrators. I actually have all those, sitting in a box.
Lots of advantages when done right.
Very natural approach. Eliminates a ton of hassles.
Dual 400 square inch screens with 900 GPH pumps. LED based red/blue lighting.
Gravity flow back to tank, for pods.

TANK STAND
Height TBD : 30-36" ??
Oak veneer, stained fairly dark
Three sets of doors
Nothing really underneath. Sump and everything is in fish room.
Built in two parts : Base + Tank support.
Waterproof plastic/formica to protect floor and drywall. Hidden.

SUMP
Always dark. 75 gallon box
900 GPH return pump. Internal powerhead
Shelves of live rock rubble
No need for a huge sump with algae-turf-scrubber filtration.

REFUGIUM
Shallow 25G box
Sand bottom on part, baffles, some live rock
Wide for gentle flow
Goes between tank and sump.
Weak LED lighting, red/blue for algae

EQUIPMENT ROOM
Outside shed.
Scary hole in the wall of the living room for all pipes and such.
Simply buy a plastic pre-fab garden shed. Probably 6 x 8 or so.

ADDITIVES
The plan is to use kalwasser + individual additives, not a calc reactor.
Section one is automatic kalk. Pumps rodi into stirrer module, timer based.
This will be adjusted to less than full needs.
Section two is automatic calcium/alk/mag
Individual dosing tanks, really just for final tweaking.
Section three is automatic top off
From rodi tank. Yes, separate from kalk, deliberately.
Water from RODI, same as now.
Water changes will be largely manual.
One 35G trash bucket for RODI water
One 35G trash bucket for mixed salt
One 35G trash bucket for drain water
Change 35G, once every 2 months, in one batch. Less is needed on an ATS system.

CIRCULATION
To be honest, this is the part I am most uncertain about. Very tricky.
Two 900 GPH pumps from ATS, exit near top, facing forward. Low velocity.
One 900 GPH sump return, exit underneath central shelf. Lots of small jets
LOTS of powerheads for the rest of the circulation.
Likely a series of smaller ones along the back. A couple at the ends.
The concept is to have a forward Gyre.
Circulates from top back, forward on top, down front, back along sand, and up.

CONTROLLER
Uses Arduino microcontroller.
Controls lighting, dosing, chiller.
Already on my small tank, but needs updating.

CHILLER
This will use the algae turf scrubber screens and evaporative cooling.
A simple fan accross the screen results in huge evaporation and cooling.
Like a swamp-cooler.
Cheap and easy. Works great in california low humidity.
Controlled by microcontroller.

TANK VENTILATION
Tank and lighting will be vented outside, pulling air from living room.
Set of pipes from top-back of tank, to 4" pipe.
Fans outside. (Salt air concern)
Ventilation is meant to be moderate. Some air will vent to living room.
Big living room, but still want to keep humidty and heat down.

ELECTRICAL
One 30A main dedicated line.
Need to add wire + conduit from main breaker.
Battery backup on 1 tank power head, and 1 turf-scrubber pump
8 plugs under tank, for powerheads, etc
8 plugs in equipment room.
8 relay controlled plugs in equipment room
Probably a GFCI + 10A breaker on each set of 4 plugs
 
Congrats! Good job with planning as that is most important so you can save some money and possibly the relation ship with the wife;) Where are you currently at with this two page list? We will need lots of pictures along the way and I'll be tagging along. Any timeline you have in mind?
 
The problem with planning, is you get to see the full list.
A pretty daunting set of tasks.
Here is the plan and status. Pictures this weekend.


PLAN

PRELIMINARY STEPS:
Detailed plans
Single filtration bank
Update micro controller
Update automatic additives
Equipment room/shed
Electrical
Single lighting bank
Buy more dry-not-live rock
Dry aquascaping
Design and build base of stand
Full set of filtration
* At this point, I can still give up cheaply if it seems like a bad idea.

MIDDLE AND EXPENSIVE STEPS:
Design and build final parts of stand
Big hole in house wall !!!
Order tank $$$
Full set of lights. $$$
Buy pumps and powerheads $$$

TANK SETUP:
Fill with tap water
Finish most aquascaping
Tune Circulation
Switch to RODI, add salt

TANK CHANGEOVER:
Move sump to new tank
Pump water between tanks to equalize. Let run for a while.
Buy cleanup crew
Slowly move rocks, coral, fish.
Disconnect old system, change over refugium.


STATUS

Fully completed: :beer:
Refugium
Calcium doser
Alkalinity doser

Mostly completed :hammer:
Main Sump. Need to replace pond liner with epoxy/acrylic
Filtration.
Arduino microcontroller

Just Started :reading:
Aquascaping 3D drawings
Tank Stand
Main tank lighting
 
Simple 3D drawing of stand + tank.
The top will be fairly low profile.
Still not quite sure on height of stand.
 

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Filtration:

I have been working with others on algae turf scrubbers on a different site/forum, so makes it easy to post a quick summary here.

Might be fun for some flames since algae turf scrubbers (ATS) is somewhat controversial.

# ATS BENEFTS
I have tried the standard careful feeding + protien skimmer + carbon + water changes.
I am definitely sold on the ATS concept now, after switching.
Both can keep the tank clean. Both take effort to build and maintain. No miracles, sorry.

The true fundamental difference:
The traditional method is really about limiting the nutrients before they turn to nitrate. Protein skimmers pull out food/poo, not nitrates.
Where with an ATS, you are pulling out final nitrates/phosphates directly.
That difference means you can have a very nutrient rich tank, yet easily have undetectable nitrate and phosphate.
To many implications to list. Most good, but not all.


# ATS PLAN:
Build a dual-scrubber system. Two identical modules.
Vertical type, double sided. Center screen with lighting on each side.
Each would be very much like a tall SM100. Same width, similar onstruction, but twice as high.
Screens = Two x 20" x 14" = 560, dual sided = 1120 sq in of surface total.
LED lighting. High efficiency LEDs, spectrum optimized, about 60W each = 120W. (Roughly equivalent to 300W T5)
Two 850 GPH (effective) pumps from tank up to scrubbers, gravity return to tank.

# ATS TRADEOFFS:
Definitely plan a two sided dual vertical system.
Two identical independent systems.
. Separate screens, pumps, everything.
. Great for redundancy.
. Allows single smaller unit test on current tank.
. A bit more expensive, and more things to fail.
. Uses a smaller pump for each.
Two sided vertical.
With LED, the best energy point trade-off is a single screen with lighting on both sides.
The pump power is a large percentage, and LED lighting outputs only one direction.
Having tried a horizontal that just never was quite efficient enough, I plan to go vertical.

# ATS SCREEN SIZE:
Standard SM100 = 100x2 = 200 sq in surface area.
Very strong for 50g. Good for 100g
Basic = 1 inch/gallon. Good = 2X. Strong = 4X
Target a 200g tank + 75g sump = 275g
Best to have 300*4 = 1200 sq in
/2 sided, /2 unit = 300 sq in per
Ok to have less, 275 * 3 = perhaps 825 sq in
/2 sided, /2 unit = 206 sq in per

# ATS PUMP:
DUAL. Two required : Quiet One 4000
Most energy efficient at rates I need.
Assume 2.5' of head, so 850 gph
Total for 2 = 1700 GPH
Pumps to be located in bucket of fresh water with heat dissipation. Eliminates heat transfer to tank.
Gives a 6X filter turnover ratio.

# ATS SCREEN WIDTH:
Each one = 850 GPH
Target 35-40 GPH/inch
A good value = 20 inches wide = 42.5 GPH/in
Total for 2 = 40 inch wide

# ATS SCREEN HEIGHT:
1200 / 2 / 40 = 15
1000 / 2 / 40 = 12.5
No real reason to skimp on height, other than adding head to pump pressure.
Current target = 14"
This gives 14 * 20 * 2 * 2 = 1120 sq in of surface area.

# LIGHTING:
This will be LED based. N * (1X Blue + 2X Deep-Red + 1X warm-white) mixture.
Using modern LEDs, algae spectrum optimized. Seems to be about 4X more efficient than CFL, or 3X versus good T5.
A standard SM100 = 100W of T5 with quality individual bulb reflectors
So 4X that = 400W
Standard CFL target is 1 watt / gallon = 275W.
So preliminary target = 100W of LED power.
Easy to add more later.

# POWER USAGE:
Pumps = 2 x 50W = 100W, 24hrs/day = $224 per year
Standard Lighting would be 400W, 16 hrs = $600 per year
LED Lighting = 100W, 16 hrs $150 per year
 
A quick picture of one of the turf scrubbers.
It is 22" wide x 14" tall. There will be two. The second one is almost done.
Temporarily set up on my current system. Temporary CFL bulbs as well.
But progress!
 

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Change of plan:
After much re-arranging of furniture and visualizing, decided to put the tank on a different wall.
If I make it 7.5', it fits in the entertainment center alcove, and we can
put the TV on the wall. The alcove was from the old days of big tube TVs.

This puts the equipment room is in the garage, not outside shed.
(Which is where it is now for the small tank.)

It makes the whole job a LOT easier.

Here is where the tank is going will go.
Thinking ahead - repainting it before putting the tank in. But - more delays.

The downside it is a tiny bit smaller, and only visible from the front.
But that means only one section to keep clean!

And interestingly, the amp, DVR, and other electronics will now be under the tank. Scary if it leaks or if humidity is not dealt with.
 

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The drawing for the internals of the stand construction.
Cross beams are 2x6
Legs are 2x4s. Essentially 18 of them.
No bottom structure. The floor is just too uneven.
Plywood ends and stiffeners only partially shown.
Top will be 3/4" ply, also not shown.

Overflow pipes will be just inside end/back beam. "should" fit.

Hopefully this weekends project.
 

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Stand partially done.
Decent progress for the weekend.
The top base is done, along with a couple of legs.
As shown, it is upside down. Very flat!. To within 1/32.

The lumber I bought was junk, as usual. To get it that flat, I clamped
a straight-edge to the 2x6 beams I bought, and cut of 1/8" with a
skill saw. So super-straight.
Even better were the center two:
I am very happy with the center two "engineered" beams.
I bought a 4x8 sheet of 3/4 ply, and used 30" width for the base, leaving 18".
I cut that 18" into 4.25" strips, and glued them together in pairs.
So center two beams are extra strong, and very dimensionally stable.

Also a fun note:
The funky purple glow is from the LEDs on my turf-scrubber for the current tank.
 

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