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Discussion Starter · #1 · (Edited)
This project's been a long time in the making and will likely be a while longer before there's any water in it. I'll be DIY'ing the light fixture, stand and autodoser. Main equipment as follows:

Waterbox Clear 3620
3 x 24w T5HO
Eheim 2217
Eheim 2215
Matheson 2-stage reg + 2 Fabco NV-55s + Clippard mouse/manifold
2 x Griggs reactors

I've been working on the lights and stand on and off for the past couple months. Both are based off of a similar design to what I built for a 60p about a year ago: https://www.plantedtank.net/forums/...stand-different-take-design-construction.html

Being my second attempt on both of these, I'm pretty happy w/ how smoothly things have gone so far. Sorry for not being more consistent on taking pics during the build process, but here's everything so far:











And the stand so far:



 

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Discussion Starter · #3 ·
The light is now pretty much finished. My plan is to have the cords run behind the tank so I mounted them towards the back of the fixture. Unfortunately their weight now tips the fixture up in the front quite a bit. Hopefully a few lbs of lead shot in the front of the housing will do the trick. Pics:






As you can see I also added one of those cheap LED strips that you can find on eBay for just a few bucks. I'm hoping it'll make a decent moonlight. If it ends up too bright, I'll black out a few of the LEDs.

I also finished puttying up the stand and finished the back panels. The left side is hinged so I can get behind the stand--the plan is to put this against a corner wall.

 

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Discussion Starter · #8 ·
Thanks!!! As it took years to convince the wife to allow another tank in the house, I'd been planning things out in the meantime, including how best to build as much as possible and thus keep the build costs minimal while also as attractive as I could. The one thing I didn't work out too well in my head before I actually got the go ahead: this thing just looks WAAAAAY too big for that little corner of our living room!
 

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Discussion Starter · #9 ·
My auto dosing system is pretty much done. I'll be running 2 needle valves off my regulator, feeding in below the 2 solenoids. Solenoids will open on a timer after dark for a few minutes and fill the bubble counters. Co2 will then turn on in the a.m. and push the ferts into 2 RG reactors and into the tank:
 

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what an interesting way to do autodosing! I would have never thought of feeding them straight into the reactor! doing it this way would prevent any back pressure from reaching the ferts. do the solenoid stand up to the co2 pressure?

Yes, beautiful tank build! and very nice stand, I like the color
 

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Discussion Starter · #11 ·
what an interesting way to do autodosing! I would have never thought of feeding them straight into the reactor! doing it this way would prevent any back pressure from reaching the ferts. do the solenoid stand up to the co2 pressure?

Yes, beautiful tank build! and very nice stand, I like the color
Hey, thanks! The solenoids are NC and can handle 125 psi so more than enough! Path of least resistance should ensure gas only goes into the reactors anyway. My only worry, as I haven't yet tried this out in real life, is will the bubble counters fill easily and consistently enough, and will the level of the fert solution in the bottles have any effect on that? I know the gas in the lines will easily compress and make room for the liquid, I'm just not sure exactly how much they'll fill and/or overfill into the lines after the counters. There will still be check valves between the reactors and the counters, so hopefully their resistance will be enough to stop the flow at the right point too. I'm just going to use a cheap 15 min timer to start but if I have to I'll get a fancier digital that I can dial in by the min or second.

My goal w/ this was 1) cheap 2) minimal moving parts that won't break down or get clogged, and most importantly 3) no lines coming up and over the rim of the tank. I really hope this will work, but if not, I'm only out about $40 in parts.
 

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Discussion Starter · #13 ·
How do you like the build quality and clarity of your WB tank? My 4820 should be here in a few weeks. Really looking forward to more space for the fish to school...
Extremely happy. Glass is beautiful, silicone work's very clean. Only gripe: the mat's pretty thin and dense. Probably great for a professionally manufactured stand, but for my DIY one w/ all its irregularities, I'd prefer something a little thicker and spongier. I may end up just swapping it out.
 

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I am extremely jealous of that storage system, smart planning.
 

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I like the depth and the focus point being in the middle , it'll look great once the plants grow in the back as well

Yeah, a few smaller pieces in front of the big ones will gradually soften the edges. I think it looks awesome.

Is this stone going to impact ph?
 
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