oh well good, I won't feel bad about hijacking then..
Here is my best advice:
1) look at other people's programs to steal ideas
CHL%-A01
HT1%-A02
FRG$-A03
STR$-A04
CO2&-A05
FUG$-A06
KLK$-A07
OZN&-A08
ALM&-A09
MH1$-B07
MH2$-B08
AT1$-B04
AT2$-B03
TEN$-B05
If Sun -090/120 Then AT1 ON
If Sun -095/090 Then AT2 ON
If Sun 000/000 Then TEN ON
If Sun 120/-060 Then MH1 ON
If Sun 110/-070 Then MH2 ON
If Sun 000/000 Then FRG ON
If Sun 000/000 Then FUG ON
If Temp < 77.0 Then HT1 ON
If Temp > 77.5 Then HT1 OFF
If Temp < 78.0 Then CHL ON
If Temp > 78.5 Then CHL ON
If Temp < 50.0 Then HT1 OFF
If Temp < 50.0 Then MH1 OFF
If Temp < 50.0 Then MH2 OFF
If Temp < 50.0 Then ALM ON
If Temp > 81.5 Then MH1 OFF
Max Change 020 M Then MH1 OFF
If Temp > 81.5 Then MH2 OFF
Max Change 020 M Then MH2 OFF
If pH > 08.05 Then CO2 ON
If pH < 08.00 Then CO2 OFF
If Time > 00:00 Then KLK ON
OSC 002/255 ON/OFF Then STR ON
If Timer STR = ON Then KLK OFF
If pH > 08.35 Then STR OFF
Max Change 030 M Then KLK OFF
If ORP < 370 Then OZN ON
If ORP > 390 Then OZN OFF
If pH > 08.60 Then ALM ON
If pH < 07.70 Then ALM ON
If Temp < 76.0 Then ALM ON
If Temp > 81.5 Then ALM ON
If ORP > 420 Then ALM ON
If ORP < 300 Then ALM ON
If Power 000 Then ALM ON
If Switch1 OPEN Then ALM ON
If Switch2 CLOSED Then ALM ON
If Time > 00:00 Then ALM OFF
If Time > 00:00 Then FUG ON
2) redundancy is still important just in case a probe fails or something like that. (another unit to monitor temp is probably the most important)
3) Reefrontiers is my home and I've never really strayed, but Reef Central has the best forum for aquacontrollers. Look in the sponsors section under Neptune. the guys that work from Neptune are on there constantly and are quite helpful.
4) save a copy of your program somewhere in case you accidentally loose the program.