Please suggest lighting for 90G tank

I want a more heavily planted tank than what you see in my gallery pictures.

I was told at the LFS that the T5 HO with 2 54Watt bulbs light was good enough ,but there was a misunderstanding:

I had gone in there to get filtration ,lighting,more gravel, substrate made for plants(with fertilizer,etc..) test kits,etc..etc..etc....

After we were helped with picking out a canister filter, I told the guy I wanted something good enough for live plants , someone who was an expert would have (alhough I'm no expert), Not something basic, but didn't want to spend 600 and he misunderstood me. I realize NOW it's not hid fault for misunderstanding me,(misunderstandings happen and I'm not the best communicator) as I should have said "for lighting" but in my mind I was thinking for lighting... He thought I meant for ALL the supplies i was buying that day. So he didn't show me anything in the store other than what I got .

If I had known they had the same exact thing with 2 more bulbs,and only 200.00 more I would have probably gone with that ! It was only 300something. I found out they had better ones after confronting the guys and telling them my dad said what I had wasn't enough.

My dad was dropping off my son and saw my tank the oher day. I told him my plans for the tank,and he said I didn't have enough lighting. He recomended 2 bulbs of Compact florescent lighting or do some kind of custom/home made lgihting (Which I have NO idea how to do) . He hasn't had tanks for 20+ yrs,but I still took his word because hes very knowledgable.
So I go back to the LFS When I went back to the store, the 1st guy I tell him what my dad said,and he showed me what they had, then said that is old school and more people are using the T5 lighting. He said what would be better . So then he showed me the same T5 ,but 4 bulb one for 3hundred something. Then he goes and helps another customer. I go to tell the person who helped me originaly what my dad said and then what the other employee said, and tell him "Why didn't you show me what else you had and tell me that other one was better ???" He kept saying "you said you didn't want to spend more than 600,remember? " And explained that he didn't want to push sales on me if it was out of my budget/limit ,and was just trying to work with me. And I got confused and believed him(I gotta stop second guessing myself) ,because..... *rewind bach to that 1st day of purchasing everything:

After we picked out the light (out of two choices he gave me) I was so suprised and exited at how low cost the light was I still wanted to make sure we didn't go overboard in our spending. We had 2,000.00 left in the bank from our tax refund $ and I didn't want to spend it all on fish stuff, so I started asking my husband to total everything on his cell phone calculator to see where we were at. The guy saw him doing this.
I only realized LASTnight why it seemed weird the guy kept saying "look,your still under your limit" while we were at the register when it was almost time to pay for the stuff and we were at 575.00 for everything.
Anyway, now the guys there think I only wanted to spendX amount on everything (when it was the LIGHTING i had a limit of 600) .

It's past the 7days to try to get a refund,and now I have to decide if I want to take the $130. as a loss (what a waist of $ to end up not using it) and buy something entirely different , OR buy a whole new light strip(with 2 bulbs) to suppliment the one I already have. It upsets me there was a misunderstanding, but I need to figure out what to buy now so I can get over being upset and just try to forget about it.

I do paln on going back and tell ing them what I meant that day I came in to buy everything for aprox 575.00 and that I'm not mad at them for misinuderstanding me. But I am still upset he would sell me something that isn't good enough,just to meet (what he thought) was my budget limit. If it's not good enough for my needs, and I would STILL have wanted to know what I should have bought, I hate it when people can't be blunt &honest enough to speak up ,just because they're afraid of being pushy or affending me. It also makes me mad he thought I didn't have the $. Now I don't have the $ (upfront) ,because we spent the rest of our tax refund $. BUt I wanted to get the right lights then while I had the $. I was mad at myself for not thinking to come here and research 1st too , but it's too late, so oh well. :wall:

Forgot to say, I do have a job,and if I need something that costs more than 200.00 I'm willing to save for it, until I can get it. I am wondering if I go ahead and just get a 2nd T5 2 bulb light strip (It has those blue lights,and a reflector,with two on/off buttons) .
The question I have about that is, it would only cost me another 130 to get a 2nd one, (totaling 260). The same store sells the same light but with 4 bulbs (Don't know the wattages) but it costs over 300.00. I'm thinking that one might be better if it costs more, but then I'd have to re-sell my existing light,because I wouldn't need it. I've only had my existing T5 HO , for over 1 week . I'm to embarrassed to ask for a refund/exchange,and I think their refund policy is 7days anyway. Plus when I went back there to talk to them,they seemed insensitive towards me didn't even offer to do a exchange. Im kinda irritated w/them so I paln to buy else where too. I won't stop shopping there for fish&plants,etc..,as they are the best fresh & salt water FS in area.

I was told (and it also says on the box) , that it has a good reflector. It is 10,000K . Each bulb is 54 watts and there are 2 bulbs. I'm sorry but when I pull the light fixture closets to the front of the tank, I see how dark it looks in the back. My sword plant leaves and another kind of plant are geting brown and looking not as good as when they were first purchased. These plants don't looked burnt,but just a little bit "weak/unhealthy" IF YKWIM??

I have substrate made for plants ,in a layer underneath the gravel (small gravel rocks) . Mixed with root tabs style fertilizers. I also have liquid fertilizer. I was wanting to do c o 2 , to help out the plants,but I don't think what lighting I have is enough. It's not so much that I want massive growth. Just to keep the plants very happy and thriving . I read a bit a year ago and know water chemistry and the right fertilizers are also a factor ,not just lighting and co 2.
If I buy a 2nd T5 light strip with two bulbs, i will have a total of four 54watt bulbs. Each light wil lhave two on/off buttons. One for each bulb. SO with two light fixtures, I can also turn off 1-2 of the lights on just one,if needed, or run all 4 lights shorter or longer periods of time , depending on what ever is needed.
Oh and I was jsut gonig to do coke bottles with yeast hooked up to air line tubing and a glass diffuser until I decided to buy a pressurized c o2 system. I didn't think I would need a pressurized system yet, since I don't consider myself advanced and I am still just learning how to care for the plants. (?) .
I want to learn as I go,but would one day (with this tank) love to have something impressive looking ,like LOTS of HEALTHY looking plants. I don't care if they grow slow or super fast,just want to be able to keep most things alive and when peopel come over my house they will say WOW !!!

I'll check those articles out. Thanks. By the way, my dad has a awsome dart frog breeding set up . He has bred them either last year or the year before. I wouldn't be surprised if he's on your frog forum. I woudln't know what username though.