Interesting you should suggest that Mike. In addition to the BC fittings and 30w fluorescents that I acquired, I bought 2x 125W compact fluorescents from Growell on a 30 day return policy. I'm thinking the latter might well be the solution I need but they are indeed extremely large - 380mm long including the fitting. Having had a look about, there are megaman bulbs of around 100W that are only around 280mm long so maybe I trade in for those. Both of these use an E40 screw fitting. The problem with that fitting is that most lamp units that fit that bulb are built for metal halides and have a built in driver - they tend to be those massive bay lights that you see in warehouses. However, unless you move up to metal halide, this would seem to be the highest lumens/unit volume of light outside of strip lighting so good advice - thanks... More on that later.
Update on the tank:
So, having removed the lid and stripped back as much of the excess silicone as my soft hands would allow, I have now installed the glass rims. I installed the front and rear strips first, clamping them in place with G-clamps and some wee rubber pads. I left these for 24 hours to cure and then installed the three front to back strips.
Picture showing all the silicon round the tank's rim before clean up:
Picture showing g-clamps holding the cross bars in place:
I figured that the cross bars needed pressed against the strips on the front and back to create a strong bond. My wife is a design engineer and very good at arts and crafts - she told me to leave any excess silicone until it set and then remove it with a sharp knife. For what it's worth, I think she has been working with marker pens and superglue too much - I would recommend scraping off the excess while it is still wet as I'm seeing a much tidier finish where I have done that.
So, tonight, I think I can refill the tank a bit. I'm not going to take it all the way up to the top, but I'm keen to get a bit more water into it to keep the critters and plants happy. Currently it's around 25% full but this includes lots of wood and substrate so there really isn't much in the way of swimming space in there. Given all the disruption to the substrate, there is probably a bit of an ammonia spike going on... Further, with the reduced volume and open top, heat loss is bound to be much higher so the heater will doubtless be struggling to keep the water temperature up above room temp. The barbs should be fine for a short period of time, but I'm not sure how the inverts will cope. Anyway, tonight I refill to around half full.
Still to do:
- Decide on lighting solution. Current thinking is CFLs with bigger shades than I currently have.
- Acquire stainless steel tubing to replace nasty green plastic pipes - the pressure has upped on this modification because the eheim u-bends don't stretch over the glass rim (another schoolboy error...) and I'm having to fab up a temporary solution.
Cheers. S