Car got gummed up with some BlueDevil. Sort of like rock salt deposits all in the cooling system. I decided to flush the radiator out and do a few more things. First I took out the thermostat which was clogged up with a mixture of coolant and that gummy white BD stuff. Looked like it was stuck open as well. Cleaned around the thermostat with a rag and got the gunk out. I sealed the thermostat housing perimeter with sealant and screwed the housing back on without the thermostat. I plan to buy a new one, for the time being I am running without a thermostat. I then pulled the drain plug out and let the coolant drain. Lots of the rock salt type material came out. After that I put the drain plug back in and poured straight distilled water in the cooling system. About 2 gallons. Then I started the engine and poured in the peak: super cleaner+flush. It started to foam up , which I think is normal. It didn’t take all of it at first, had to wait for the water/remaining coolant to circulate. Then I drove the car for about 30 minutes with this mixture in there. Then parked it and left it overnight. Now I am wondering, should I drain the stuff in now or should I drain it along with a hose. I am thinking the hose might not be needed, it’s more of a traditional thing. But should draining it now and putting fresh 50/50 be enough. Or should I use a hose to get the remaining stuff out of the radiator?