Need some purchasing decision help

phoenix73

Member
I made some mistakes 2 yrs ago when I built up my FOWLR tank.
I am learning what worked and what didn't.
I have a 150G non drilled tank flush against a wall shared with the heated garage. I have plumbed a large cannister filter through the wall in a closed loop. I have a drain valve that I can turn on the PVC to empty old water directly into a sink in the garage. I then make new water next to the sink and pump it back in via the pump on the cannister filter.
This part works great.
I had to add a skimmer. Unfortunately, due to the height difference between the floor of the garage and floor of the dining room where the tank resides, I have to put the skimmer on a high shelf. It's a pain to clean it on a ladder.
I found plans on the forum for PVC overflows, so I am going to make one through the wall and I am in the process of building an 83G sump/refugium.
Questions:
My new questions are lighting. Right now, I have 2 50/50 compact fluorescent 96w 36" strips. I obviously need new lighting if I want to go to corals. I'm new to MH lighting, so all I have heard about are the prefab MF T5 combos.
There is a hood on my tank and the wife will not let me remove it. I also have glass over the tank under the current lights. Can the lights stand above the water without glass? Should anything go between the lights and glass?
Adding a fan will help with heat control in the hood, but once I get the sump running how much will that help with heat control due to evaporation?
Finally, I used crushed coral in my base. Is there an easy way to switch to sand if I go to coral? Or should I just do the sand in the refuge and keep the CC in the display tank?
I am initially going to keep the cannister running as a separate system until the refug gets up and running and then I will convert that to carbon and other chem and mechanical media only. The benefit is easy water changes.
Any other comments?
 

tang master

Member
the only question i can answer right now is the crushed coral substrate one. Crushed coral is actually the best and most benificial substrate. It controls pH like nothing else. Great stuff!
 

cedarreef

Member
If you were to switch to MH then the hood and glass will have to go. You would definitely need to run MHs over an open tank to prevent overheating.
I respectfully disagree about the CC. It has lots of room for detritus to get trapped along with food waste and can cause spikes in nitrates if not vacuumed very often and thoroughly. As for pH buffering, aragonite sand is great for that. To switch I would drain as much water as possible and store it in large rubbermaid containers and put all livestock and live rock in with a powerhead and heater. Just scoop out the CC and clean the bottom. After that, place the rocks in and fill about halfway with water. Now add the sand around the rocks as deep as you want. Add the rest of the water and then the livestock. This shouldn't cause any spike in ammonia as long as it's done in a couple hours and the LR is not left to dry.
The sump can help a bit with heat, but can also increase evaporation rates due to the added surface area. If you plan to have a refugium then the light on that will also contribute to evaporation rates.
Hope this helped!
 

phoenix73

Member
Thanks. So there is no way to have a hood with MH lighting? Even with an exhaust fan?
My wife is very unhappy with the idea of removing the hood since it matches the furniture well and is in the dining room.
 

phoenix73

Member
I'll get pics. It's just a big 72" x 18" wood cover (Canopy) with a hinged lid that sits on the top of the tank. It is open in the back.
I was thinking of putting one of the coralife MH T5 systems on the tank. It comes with legs. It looks like this would fit under the cross braces of the hood without a problem.
Right now I have 3 all glass hinged covers on the top with my CF lights (2 36") 96w 50/50 fixtures with legs sitting on the top of the tank under the canopy.
 

spanko

Active Member
To me that would be a good option if indeed it did fit inside of the existing canopy. You may hve to vent the canopy with some small computer type fans but not a hard thing to do. Take some measurements and see if the MH you are looking at will fit with little "fitting" by you.
If not:
http://lmgtfy.com/?q=aquarium+metal+...+retrofit+kits
Take a look around at some of those linkys and see what suits your needs.
 

jackri

Active Member
I personally think the tanks look better without canopies/hoods -- just my opinion I guess but I hate the look of wood over my tank. An open top will keep it cooler when running halides and give more O2 turnover... at the cost of more evaporation of course.
 

spanko

Active Member
at the cost of more evaporation of course.
Not to mention that when the wife is not happy, no one in the house is happy!!!!!!
 

phoenix73

Member
When "retrofit" is described, are people talking about just mounting the lighting on the inside of the canopy? Or do you use any of the existing lighting components?
I would love to attach the lighting right up to the inside of the wood canopy, but wouldn't that make the canopy very heavy? I still have to remove it to clean etc..
Guess that I am more of a noob at this than I originally thought
 

spanko

Active Member
Yup the retorfits will mount to the existing canopy. Not really gonna add that much weight, you mount the ballasts outside the canopy somewhere not to it. The bulbs and reflectors don't weigh much at all.
 

phoenix73

Member
Cool. Thanks. I guess that I will be looking into this as an option.
Should I put anything over the water to prevent fish from jumping out, or just leave it open for temp control?
Thanks for all the help :)
 

cedarreef

Member
Some people put eggcrate over their tanks, but I wouldn't because it acts as a light diffuser. I would use pond mesh which you can probably get at Menards, Home Depot, or Lowes. A metal screen would also work, but there might be some heat issues when you try to touch it.
 

phoenix73

Member
My wife has given me the go-ahead with removing the glass tops and building MH lighting into the canopy.
So my next steps are to finish the acrylic 85G sump/refugium with coral frag section. OK, start it, but I did pay for the 3/8" acrylic and all of the cuts ($245). Then make the PVC overflow and get that working.
Next add a chiller in the sump line.
Then I can get to work on lighting.
Once I get all of that working and stable, I will try to convince myself that I don't need to get rid of all of the crushed coral and switch to sand.
What if I added sand over the crushed coral? I could vacuum the crushed coral and remove a large portion of it, then add the sand. I know that the fish need to be removed, but would I have to remove the live rock? That is the pain.
 
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