March... the month of birthdays. So my kid was born in March, and a lot of mommy friends my wife met at various Kaiser baby classes/sessions also have March (or there abouts) babies all around the same age, so that means lots of birthday parties... every... freaking... weekend.
Anyways, more or less finished my sump. This was a work of love, and by work of love I mean I love not having to spend much money, which is exactly what happened here. This was an old acrylic 100g tank that was 72x18x18, there's a story here but I'll save that for another post... maybe, needless to say it had the top chopped off some time ago, and has been inside my greenhouse and outside on the deck for the better part of at least a few years. Now over time acrylic tanks tend to bow out regardless of bracing and these bows permanent warp the acyrlic... so that said.
Step 1: Chop it down from 72" to about 48" to fit under my tank. The end piece is what I used because it actually was originally inside the back/front/bottom panel so great. Required some very careful trimming of that end piece, and even so I kind of had to force said mentioned bow flat gluing one side at a time, strange enough I actually got a fairly good fit so weldon 4 worked great and is WAY stronger than 16. However to add a little extra strength, tap plastics sells 1/2" "triangle" rods, they're 90° and are made to reinforce corners, so for like $6.25 for a 6' long section, I used piece of those to reinforce the ends... and oh boy that was messy ontop of messy... but whatever, I tested it for water tight, and it held water, so corner pieces are to strengthen anyways not to make water tight.
Step 2: that extra 2 feet of front/back/sides... well those are going to be my baffles. Remember when I mentioned permanently warp... yeah... that goes for those baffles I created, as well as the sides of the tank that I had to glue them into. Do note it is practically impossible to do a really good glue job with the liquid Weldon on 3 sides when you slide the piece in between those sides, normally you'll do one side at a time and just build around the piece. Well there's some gaps... so I had to use the 16... but some gaps were a little too big, so I had to jam a piece on as a support. Oh yeah I not having a router table makes this a bit difficult as I used the one original end of the tank as a "jig" to square off my pieces, and while I did ok on it... I could tell after the fact that was a mistake to do. Oh yeah those joints are ugly as all sin.
Step 3: Water test again to see if each baffled area holds water. I know the whole thing holds water, now I just care that each section will at the very worst have a minor leak.
So here it is... don't judge
So for a grand total of $6.25 I got me a sump... ok a little more because the Weldon was at no point free, but whatever. The point behind this build was
1) I wanted to get something on the tank QUICKLY, water is already in with rock and cycling, no plumbing setup because no sump yet, with sump in I can plumb it and hopefully fill the whole sucker up to cycle every part of the tank.
2) I did think about ordering acrylic cut to the sizes I need (or at least in the major dimensions) and to glue it all together, this was a test trial to see if I had the skillset to do it. And I think after this I definitely have a vote of confidence with a pretty firm maybe. Considering all the warped and out of square parts of what it started with, the fact it holds water, great, the fact I put in baffles, awesome, and more importantly it gives me an idea of what I really want in a sump and what needs to be done.
3) So at some point this will be replaced, but whether I find a used one that fits my needs perfectly, or order acrylic and really take my time with it, this ensures that my tank is operation and it doesn't just sit there waiting for one aspect to get done.
Ultimately I wanted a sump that was "Triton compatible" which basically means 10% of your tank volume for refugium space, which is what I did in the first chamber on the right the reason why I used black acrylic there for the baffle too. However after doing some calculation of the "empty" space in the tank, I cut back on that idea, made the baffle a bit lower, the most important part of the sump... no overflowing if power goes out. So like I said this is just something to get the tank up and running, leaving extra space is most definitely a necessity though. I haven't calculated how much space is in the refugium area but I think it's a bit less than 10%.
Skimmer section had to be big enough to handle the skimmer I have, ATI Bubble Master 250, which has a rather large base, external pump, and I wanted a little extra room for things like heaters as well.
Finally the return pump area I wanted to be big enough to hold enough water so I didn't have to rely on an ATO too much, I will have one, I just don't want to have to do daily fill ups if possible. I did put in a baffle to deal with bubbles, which is not something I ever had a sump, and never had an issue with microbubbles in the display either, but either way like I said this is a test bed sump.
I was going to put a brace on the entire thing, cut out holes, make some polycarbonate lids and what not, but... that's an expense I really didn't want to put on a temporary setup. The baffles are more than strong enough to keep it from bowing too badly, so it'll have to do for now, and lipstick on a pig would definitely be the call if I did.
One thing I'm thinking of putting it, and that's a bubble trap chamber for the return, just something simple to keep any bubbles going from the overflow confined and let them spatter and spit inside a box instead of the inside of the stand. I can put that together really easily though.
I also thought about buffing out the acrylic to make it a bit prettier... but again, the time and effort into doing what will essentially be tossed when I get a new sump, is not something I care about. I will say quite a few of the scratches become a bit less noticeable when filled with water, which is not to say they disappear, they simply don't make the acrylic look as frosty as it seems.
There's the adjustable skimmer baffle area. It is a feature a lot of sumps have nowadays, so wanted to see how how easy it was to make, and it's not terribly hard. The hard thing is finding something @#$! square so I can rip a grove that's perfectly vertical! Either way it still works. I manage to get the clear side to be flat with the baffles, so that's a fairly good glue job, it's the back side which was all sorts of trouble... but it's black so mistakes blend it easier there. Oh unfortunately I misplaced my fricking screws/washers/nuts for the baffle. Put them all in a bag, and put the bag... somewhere, unfortunately don't know where that somewhere is.
See at one point I had them! Oh well, luckily the moveable baffle can be put in later, and I promise I'll be cleaning up the area (I know some of you are judging what you see in the background of the pictures!).
So here is one of said learning points in this project, these two baffles.
First I put in the bubble trap baffle, which in hindsight, there's plenty of room to work with on the other side I should have done that second, because the skimmer baffle actually holds back water, the bubble trap baffle just diverts the water and hopefully allows bubbles to rise rather than go through the system.
Second, here comes the "permanent warp" part to bite me in the ass again. I made the baffle square with the sides but I forgot to make it square with the bottom, and this is only something I noticed the next day after all the solvent/glue was set. the top part is about a quarter inch closer to the end than the bottom part. But whatever again this baffle diverts water it doesn't hold it back. However I was using some wood as a spacer for the skimmer baffle, I glued it up, and after a couple minutes noticed it looked very crooked... and realized it was crooked because I used the crooked baffle as a point of reference for the spacers, unfortunately it was weldon 4 that was used, so it doesn't take long to set, luckily I was JUST within the window that it was still a bit gummy and managed to yank it out and reposition it. So that baffle is straight, however there's a permanent "goop" mark on the acrylic showing the mistake
Lastly, I drew some lines on the acrylic to let me know where I wanted the baffles, which was great. Super easy to do, and totally easy to rub off after all is done... that is unless you actually glue the piece ON TOP of the lines you drew... so yeah, as good as the seam may be, there are marks all inside it
... whatever as long as it works I don't care if it looks like chit!
It was at this point that I was envious of all the people out there who have CNC machines who do this for a living. Nice perfectly square cuts that I can do pretty well myself with a trim router but only if I have a reference that is also straight to start with
Welp, tomorrow I'll fill it with water and hopefully the baffles don't blow out.